19743 + Interview Questions in Mathematics Page 70 InterviewSolution

3451.	39. 90,180,12,50,100,200,?(1) 150(2) 175(3) 215(4) 250
Answer» 39. 90,180,12,50,100,200,? (1) 150 (2) 175 (3) 215 (4) 250

Discussion

3452.	If A=(x2+y2=16)and B=(9x2+25y2=225)then n(AintersectionB)
Answer» If A=(x2+y2=16)and B=(9x2+25y2=225)then n(AintersectionB)

Discussion

3453.	The given line graph shows population of dodos for various years. What is the mean population of dodos between 1975 and 1995?
Answer» The given line graph shows population of dodos for various years. What is the mean population of dodos between $1975$ and $1995$ ?

Discussion

3454.	Choose the figure from the given options which can be obtained as identical to the given figure with a sequence of translations, rotation and reflections.
Answer» Choose the figure from the given options which can be obtained as identical to the given figure with a sequence of translations, rotation and reflections.

Discussion

3455.	74. Trick to change decimal into mixed fraction
Answer» 74. Trick to change decimal into mixed fraction

Discussion

3456.	9−5÷(8−3)×2+6
Answer» $9 - 5 \div (8 - 3) \times 2 + 6$

Discussion

3457.	Question 95Length and breadth of a bulletin board are r cm and t cm, respectively.(i) What will be the length (in cm) of the aluminium strip required to frame the board, if 10 cm extra strip is required to fix it property.(ii) If x nails are used to repair one board, then how many nails will be required to repair 15 such boards?(iii) If 500 sq cm extra cloth per board is required to cover the edges, then what will be the total area of the cloth required to cover 8 such boards?(iv) What will be the expenditure for making 23 boards, if the carpenter charges Rs. x per board?
Answer» Question 95 Length and breadth of a bulletin board are r cm and t cm, respectively. (i) What will be the length (in cm) of the aluminium strip required to frame the board, if 10 cm extra strip is required to fix it property. (ii) If x nails are used to repair one board, then how many nails will be required to repair 15 such boards? (iii) If 500 sq cm extra cloth per board is required to cover the edges, then what will be the total area of the cloth required to cover 8 such boards? (iv) What will be the expenditure for making 23 boards, if the carpenter charges Rs. $x$ per board?

3457.

Question 95Length and breadth of a bulletin board are r cm and t cm, respectively.(i) What will be the length (in cm) of the aluminium strip required to frame the board, if 10 cm extra strip is required to fix it property.(ii) If x nails are used to repair one board, then how many nails will be required to repair 15 such boards?(iii) If 500 sq cm extra cloth per board is required to cover the edges, then what will be the total area of the cloth required to cover 8 such boards?(iv) What will be the expenditure for making 23 boards, if the carpenter charges Rs. x per board?

Answer»

Question 95

Length and breadth of a bulletin board are r cm and t cm, respectively.

(i) What will be the length (in cm) of the aluminium strip required to frame the board, if 10 cm extra strip is required to fix it property.

(ii) If x nails are used to repair one board, then how many nails will be required to repair 15 such boards?

(iii) If 500 sq cm extra cloth per board is required to cover the edges, then what will be the total area of the cloth required to cover 8 such boards?

(iv) What will be the expenditure for making 23 boards, if the carpenter charges Rs. $x$ per board?

Discussion

3458.	Using the number line find the integer in the following cases : [3 MARKS] (a) Sum of 5 and -3 (b) 5 less than 3 (c) 4 more than -1
Answer» Using the number line find the integer in the following cases : [3 MARKS] (a) Sum of 5 and -3 (b) 5 less than 3 (c) 4 more than -1

3458.

Using the number line find the integer in the following cases : [3 MARKS] (a) Sum of 5 and -3 (b) 5 less than 3 (c) 4 more than -1

Answer»

Using the number line find the integer in the following cases : [3 MARKS]

(a) Sum of 5 and -3

(b) 5 less than 3

(c) 4 more than -1

Discussion

3459.	The side view of a solid is a rectangle and it's top view is a triangle. Which of the following could be the described solid shape?
Answer» The side view of a solid is a rectangle and it's top view is a triangle. Which of the following could be the described solid shape?

Discussion

3460.	__________is an annual percentage of the loan outstanding.
Answer» __________is an annual percentage of the loan outstanding.

Discussion

3461.	Find the area of four walls of a cube whose one edge is of length 2.5 m.
Answer» Find the area of four walls of a cube whose one edge is of length 2.5 m.

Discussion

3462.	Classify the following as finite, infinite or null sets. (a) Set of odd numbers (b) Set of persons living for three hundred years (c) Set of letters in the word ‘TEACHER’
Answer» Classify the following as finite, infinite or null sets. (a) Set of odd numbers (b) Set of persons living for three hundred years (c) Set of letters in the word ‘TEACHER’

3462.

Classify the following as finite, infinite or null sets. (a) Set of odd numbers (b) Set of persons living for three hundred years (c) Set of letters in the word ‘TEACHER’

Answer»

Classify the following as finite, infinite or null sets.

(a) Set of odd numbers

(b) Set of persons living for three hundred years

(c) Set of letters in the word ‘TEACHER’

Discussion

3463.	In the figure given below, AD and BC are equal and perpendicular to the same line segment AB. CD cuts AB at O. Then the relation between OC and OD is _____ .
Answer» In the figure given below, AD and BC are equal and perpendicular to the same line segment AB. CD cuts AB at O. Then the relation between OC and OD is _____ .

3463.

In the figure given below, AD and BC are equal and perpendicular to the same line segment AB. CD cuts AB at O. Then the relation between OC and OD is _____ .

Answer»

In the figure given below, AD and BC are equal and perpendicular to the same line segment AB. CD cuts AB at O. Then the relation between OC and OD is _____ .

Discussion

3464.	Which congruence criterion do you use in the following?Given: EB = BD, AE = CB, ∠A=∠C=90∘
Answer» Which congruence criterion do you use in the following? Given: EB = BD, AE = CB, $∠ A = ∠ C = 90^{\circ}$

Discussion

3465.	Let A={1,2,3,4,...,40} be the set of registration number of students of class 12. Students having registration number as multiple of 4 play cricket but do not play football, students having even registration number play either cricket or football or both and students having registration number as multiple of 10 play both cricket and football. Find the number of students who play football.
Answer» Let $A = {1, 2, 3, 4, . . ., 40}$ be the set of registration number of students of class $12$ . Students having registration number as multiple of $4$ play cricket but do not play football, students having even registration number play either cricket or football or both and students having registration number as multiple of $10$ play both cricket and football. Find the number of students who play football.

Discussion

3466.	The product of two numbers is 3.92. If one of them is 1.40, then the other number is ____.
Answer» The product of two numbers is 3.92. If one of them is 1.40, then the other number is ____.

Discussion

3467.	Are 30, 40, 45 and 60 in proportion?
Answer» Are 30, 40, 45 and 60 in proportion?

Discussion

3468.	Solve the following equation by trial and error method:3m - 14 = 4
Answer» Solve the following equation by trial and error method: 3m - 14 = 4

Discussion

3469.	A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds and crosses the man in 8 seconds. Find the length of the train. [4 MARKS]
Answer» A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds and crosses the man in 8 seconds. Find the length of the train. [4 MARKS]

Discussion

3470.	Question 179(iv)Express each of the following in exponential form.−62510000
Answer» Question 179(iv) Express each of the following in exponential form. $\frac{- 625}{10000}$

3470.

Question 179(iv)Express each of the following in exponential form.−62510000

Answer»

Question 179(iv)

Express each of the following in exponential form.

$\frac{- 625}{10000}$

Discussion

3471.	If the volume of this prism is 500 cm3 what will be the side length (in cm) of the indiviual small cubes?
Answer» If the volume of this prism is $500 c m^{3}$ what will be the side length (in cm) of the indiviual small cubes?

Discussion

3472.	Calculate the value of the given expression:9×26×17
Answer» Calculate the value of the given expression: $9 \times \frac{2}{6} \times \frac{1}{7}$

Discussion

3473.	If “a” chocolates are distributed amongst “b” students equally, then what is the share of chocolates obtained by each student?
Answer» If “a” chocolates are distributed amongst “b” students equally, then what is the share of chocolates obtained by each student?

Discussion

3474.	The population of a city is 20,000. If the rate of increase is 25% every year, then find the population after 2 years.
Answer» The population of a city is 20,000. If the rate of increase is 25% every year, then find the population after 2 years.

Discussion

3475.	There is a building of ten floors and five basement floors. The floors from bottom to top are represented by integers from -5 to 10, where -5 is the fifth basement floor, 0 is the ground floor, and 10 is the 10th floor. Tracy lives in the eighth floor and she wants to go the third basement floor (floor number -3) to pick-up her car. How many floors does she need to pass to reach the third basement floor in an elevator?
Answer» There is a building of ten floors and five basement floors. The floors from bottom to top are represented by integers from -5 to 10, where -5 is the fifth basement floor, 0 is the ground floor, and 10 is the 10th floor. Tracy lives in the eighth floor and she wants to go the third basement floor (floor number -3) to pick-up her car. How many floors does she need to pass to reach the third basement floor in an elevator?

Discussion

3476.	51.A completely filled d orbital (a) spherical symmetrical (b) has octehdral symmetry (c) has tetrahedral symmetry
Answer» 51.A completely filled d orbital (a) spherical symmetrical (b) has octehdral symmetry (c) has tetrahedral symmetry

Discussion

3477.	Add 2a+3b+c+d, −a+b−c−d and 3a−4b−2c−2d. [3 MARKS]
Answer» Add $2 a + 3 b + c + d, - a + b - c - d$ and $3 a - 4 b - 2 c - 2 d$ . [3 MARKS]

Discussion

3478.	Question 9Plot the points (x, y) given by the following table. Use scale 1 cm = 0.25 unitx1.250.251.5−1.75y−0.511.5−0.25
Answer» Question 9 Plot the points (x, y) given by the following table. Use scale 1 cm = 0.25 unit $\begin{matrix} x & 1.25 & 0.25 & 1.5 & - 1.75 y & - 0.5 & 1 & 1.5 & - 0.25 \end{matrix}$

Discussion

3479.	evaluate summation of 1/i^(4m+k) K=1 to 2015 m belongs to N
Answer» evaluate summation of 1/i^(4m+k) K=1 to 2015 m belongs to N

Discussion

3480.	9 + \|− 4\| is equal to(a) 5 (b) − 5 (c) 13 (d) −13
Answer» 9 + \|− 4\| is equal to (a) 5 (b) − 5 (c) 13 (d) −13

Discussion

3481.	Which of the following is a rational number between 14 and 13?
Answer» Which of the following is a rational number between $\frac{1}{4}$ and $\frac{1}{3}$ ?

Discussion

3482.	In FIFA world cup '14 Brazil scored the following number of goals through the season:3, 2, 1, 4, 3, 1, 2, 4, 3, 2 Make a ungrouped frequency table for the given data.
Answer» In FIFA world cup '14 Brazil scored the following number of goals through the season: 3, 2, 1, 4, 3, 1, 2, 4, 3, 2 Make a ungrouped frequency table for the given data.

Discussion

3483.	What is the resultant polynomial obtained when the given binomials (a3−c2) and (51cb2+14abc) are multiplied?
Answer» What is the resultant polynomial obtained when the given binomials $(a^{3} - c^{2})$ and $(51 c b^{2} + 14 a b c)$ are multiplied?

Discussion

3484.	Write the simplest form of rationalising factor for the given surds.(i) 32 (ii) 50 (iii)27 (iv) 3510 (v) 372 (vi) 411
Answer» Write the simplest form of rationalising factor for the given surds. (i) $\sqrt{32} (ii) \sqrt{50} (iii) \sqrt{27} (iv) \frac{3}{5} \sqrt{10} (v) 3 \sqrt{72} (vi) 4 \sqrt{11}$

Discussion

3485.	A particle is tied to the end of a string of length 20cm and makes 5rps. How many revolutions will it make in 1 sec when the string is shortened to 10cm??
Answer» A particle is tied to the end of a string of length 20cm and makes 5rps. How many revolutions will it make in 1 sec when the string is shortened to 10cm??

Discussion

3486.	Question 16Data collected in a survey shows that 40% of the buyers are interested in buying a particular brand of toothpaste. The central angle of the sector of the pie chart representing this information is:(a) 120°(b) 150°(c) 144°(d) 40°
Answer» Question 16 Data collected in a survey shows that 40% of the buyers are interested in buying a particular brand of toothpaste. The central angle of the sector of the pie chart representing this information is: (a) 120° (b) 150° (c) 144° (d) 40°

3486.

Question 16Data collected in a survey shows that 40% of the buyers are interested in buying a particular brand of toothpaste. The central angle of the sector of the pie chart representing this information is:(a) 120°(b) 150°(c) 144°(d) 40°

Answer»

Question 16

Data collected in a survey shows that 40% of the buyers are interested in buying a particular brand of toothpaste. The central angle of the sector of the pie chart representing this information is:

(a) 120°

(b) 150°

(c) 144°

(d) 40°

Discussion

3487.

Fill in the blanks: Shape Centre of Rotation Order of Rotation Angle of Rotation Square - - - Rectangle - - - Rhombus - - - Equilateral Triangle - - - Regular Hexagon - - - Circle - - - Semi-circle - - -

Answer»

Fill in the blanks:

Shape	Centre of Rotation	Order of Rotation	Angle of Rotation
Square	-	-	-
Rectangle	-	-	-
Rhombus	-	-	-
Equilateral Triangle	-	-	-
Regular Hexagon	-	-	-
Circle	-	-	-
Semi-circle	-	-	-

Discussion

3488.	The edges of a triangular board are 6 cm, 8 cm and 10 cm. Find the cost of painting of one face of triangle at the rate of 9 paise per cm2.
Answer» The edges of a triangular board are 6 cm, 8 cm and 10 cm. Find the cost of painting of one face of triangle at the rate of 9 paise per cm $^{2} .$

Discussion

3489.	Height of Abraham is 120 cm and his father's height is 180 cm. Find the ratio of height of Abraham and his father. Express it in the simplest form.
Answer» Height of Abraham is 120 cm and his father's height is 180 cm. Find the ratio of height of Abraham and his father. Express it in the simplest form.

Discussion

3490.	Question 7(i) Simplify: (i) (−4)3
Answer» Question 7(i) Simplify: (i) $(- 4)^{3}$

Discussion

3491.	Question 1In the given figure, lines AB and CD intersect at O. if ∠AOC+∠BOE=70 and ∠BOD=40∘, find ∠BOE and reflex ∠COE.
Answer» Question 1 In the given figure, lines AB and CD intersect at O. if $∠ A O C + ∠ B O E = 70 a n d ∠ B O D = 40^{\circ}, f i n d ∠ B O E$ and reflex $∠ C O E .$

Discussion

3492.	What is the area of a triangle whose vertices are (a , b + c), (a, b - c) and (-a, c)?
Answer» What is the area of a triangle whose vertices are (a , b + c), (a, b - c) and (-a, c)?

Discussion

3493.	Find the value of 1022+10201020.
Answer» Find the value of $\frac{10^{22} + 10^{20}}{10^{20}}$ .

Discussion

3494.	Choose the correct way to split numbers to calculate 37×43 through the box method of multiplication:
Answer» Choose the correct way to split numbers to calculate $37 \times 43$ through the box method of multiplication:

Discussion

3495.	Regardez l'image er répondez aux questions.1. Qu'est-ce qui dans l'image?2. Quelle heure est-il?3. Que fait le garçon?
Answer» Regardez l'image er répondez aux questions. 1. Qu'est-ce qui dans l'image? 2. Quelle heure est-il? 3. Que fait le garçon?

Discussion

3496.	Solve each of the following equations and check your solution by substituting its value in the equation. 1. 2=4(z+4) 2. 6=3(b-4)
Answer» Solve each of the following equations and check your solution by substituting its value in the equation. 1. 2=4(z+4) 2. 6=3(b-4)

Discussion

3497.	कवि के अनुसार फसल क्या है?
Answer» कवि के अनुसार फसल क्या है?

Discussion

3498.	Mention the formula used to find simple interest.
Answer» Mention the formula used to find simple interest.

Discussion

3499.	A rectangular sheet of paper is 10.5 cm long and 5.25 cm wide. Its perimeter is:
Answer» A rectangular sheet of paper is 10.5 cm long and 5.25 cm wide. Its perimeter is:

Discussion

3500.	Question 2 (g) Give the order the rotational symmetry for each figure.
Answer» Question 2 (g) Give the order the rotational symmetry for each figure.

Discussion

Explore topic-wise InterviewSolutions in .

39. 90,180,12,50,100,200,?(1) 150(2) 175(3) 215(4) 250

If A=(x2+y2=16)and B=(9x2+25y2=225)then n(AintersectionB)

The given line graph shows population of dodos for various years. What is the mean population of dodos between 1975 and 1995?

Choose the figure from the given options which can be obtained as identical to the given figure with a sequence of translations, rotation and reflections.

74. Trick to change decimal into mixed fraction

9−5÷(8−3)×2+6

Using the number line find the integer in the following cases : [3 MARKS] (a) Sum of 5 and -3 (b) 5 less than 3 (c) 4 more than -1

The side view of a solid is a rectangle and it's top view is a triangle. Which of the following could be the described solid shape?

__________is an annual percentage of the loan outstanding.

Find the area of four walls of a cube whose one edge is of length 2.5 m.

Classify the following as finite, infinite or null sets. (a) Set of odd numbers (b) Set of persons living for three hundred years (c) Set of letters in the word ‘TEACHER’

In the figure given below, AD and BC are equal and perpendicular to the same line segment AB. CD cuts AB at O. Then the relation between OC and OD is _____ .

Which congruence criterion do you use in the following?Given: EB = BD, AE = CB, ∠A=∠C=90∘

The product of two numbers is 3.92. If one of them is 1.40, then the other number is ____.

Are 30, 40, 45 and 60 in proportion?

Solve the following equation by trial and error method:3m - 14 = 4

A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds and crosses the man in 8 seconds. Find the length of the train. [4 MARKS]

Question 179(iv)Express each of the following in exponential form.−62510000

If the volume of this prism is 500 cm3 what will be the side length (in cm) of the indiviual small cubes?

Calculate the value of the given expression:9×26×17

If “a” chocolates are distributed amongst “b” students equally, then what is the share of chocolates obtained by each student?

The population of a city is 20,000. If the rate of increase is 25% every year, then find the population after 2 years.

51.A completely filled d orbital (a) spherical symmetrical (b) has octehdral symmetry (c) has tetrahedral symmetry

Add 2a+3b+c+d, −a+b−c−d and 3a−4b−2c−2d. [3 MARKS]

Question 9Plot the points (x, y) given by the following table. Use scale 1 cm = 0.25 unitx1.250.251.5−1.75y−0.511.5−0.25

evaluate summation of 1/i^(4m+k) K=1 to 2015 m belongs to N

9 + |− 4| is equal to(a) 5 (b) − 5 (c) 13 (d) −13

Which of the following is a rational number between 14 and 13?

In FIFA world cup '14 Brazil scored the following number of goals through the season:3, 2, 1, 4, 3, 1, 2, 4, 3, 2 Make a ungrouped frequency table for the given data.

What is the resultant polynomial obtained when the given binomials (a3−c2) and (51cb2+14abc) are multiplied?

Write the simplest form of rationalising factor for the given surds.(i) 32 (ii) 50 (iii)27 (iv) 3510 (v) 372 (vi) 411

A particle is tied to the end of a string of length 20cm and makes 5rps. How many revolutions will it make in 1 sec when the string is shortened to 10cm??

Question 16Data collected in a survey shows that 40% of the buyers are interested in buying a particular brand of toothpaste. The central angle of the sector of the pie chart representing this information is:(a) 120°(b) 150°(c) 144°(d) 40°

Fill in the blanks: Shape Centre of Rotation Order of Rotation Angle of Rotation Square - - - Rectangle - - - Rhombus - - - Equilateral Triangle - - - Regular Hexagon - - - Circle - - - Semi-circle - - -

The edges of a triangular board are 6 cm, 8 cm and 10 cm. Find the cost of painting of one face of triangle at the rate of 9 paise per cm2.

Height of Abraham is 120 cm and his father's height is 180 cm. Find the ratio of height of Abraham and his father. Express it in the simplest form.

Question 7(i) Simplify: (i) (−4)3

Question 1In the given figure, lines AB and CD intersect at O. if ∠AOC+∠BOE=70 and ∠BOD=40∘, find ∠BOE and reflex ∠COE.

What is the area of a triangle whose vertices are (a , b + c), (a, b - c) and (-a, c)?

Find the value of 1022+10201020.

Choose the correct way to split numbers to calculate 37×43 through the box method of multiplication:

Regardez l'image er répondez aux questions.1. Qu'est-ce qui dans l'image?2. Quelle heure est-il?3. Que fait le garçon?

Solve each of the following equations and check your solution by substituting its value in the equation. 1. 2=4(z+4) 2. 6=3(b-4)

कवि के अनुसार फसल क्या है?

Mention the formula used to find simple interest.

A rectangular sheet of paper is 10.5 cm long and 5.25 cm wide. Its perimeter is:

Question 2 (g) Give the order the rotational symmetry for each figure.