19743 + Interview Questions in Mathematics Page 188 InterviewSolution

9351.	A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. if the outer side of each of the cones is to be painted and the cost of painting is ₹12 per m2, what will be the cost of painting all these cones? (Use π=3.14 and take √1.04=1.02)
Answer» A bus stop is barricaded from the remaining part of the road, by using $50$ hollow cones made of recycled cardboard. Each cone has a base diameter of $40 c m$ and height $1 m$ . if the outer side of each of the cones is to be painted and the cost of painting is $₹ 12 p e r m^{2}$ , what will be the cost of painting all these cones? $(U s e π = 3.14$ and take $\sqrt{1.04} = 1.02)$

Discussion

9352.	A bus moves with a speed of 40 km/h and covers a distance of 20 km. What is the total time taken by the bus during the whole journey?
Answer» A bus moves with a speed of 40 km/h and covers a distance of 20 km. What is the total time taken by the bus during the whole journey?

Discussion

9353.	Question 2(v)Express the following numbers in usual form:5.8×1012
Answer» Question 2(v) Express the following numbers in usual form: $5.8 \times 10^{12}$

Discussion

9354.	What is the perimeter of the below shape? cm
Answer» What is the perimeter of the below shape? cm

Discussion

9355.	Question 18 If 90 % of x is 315 km, then the value of x is (a) 325 km (b) 350 km (c) 405 km (d) 340 km
Answer» Question 18 If 90 % of x is 315 km, then the value of x is (a) 325 km (b) 350 km (c) 405 km (d) 340 km

9355.

Question 18 If 90 % of x is 315 km, then the value of x is (a) 325 km (b) 350 km (c) 405 km (d) 340 km

Answer»

Question 18

If 90 % of x is 315 km, then the value of x is
(a) 325 km
(b) 350 km
(c) 405 km
(d) 340 km

Discussion

9356.	Fill in the blanks with suitable words: 1. Diameter of a circle is _______ its radius. 2. Radius of a circle is ______ its diameter. 3. The diameters of a circle intersect at the ______. 4. The chord passing through the centre of a circle is _________. 5. The biggest chord of a circle is ______. 6. The lengths of the radii of a circle are _______.
Answer» Fill in the blanks with suitable words: 1. Diameter of a circle is _______ its radius. 2. Radius of a circle is ______ its diameter. 3. The diameters of a circle intersect at the ______. 4. The chord passing through the centre of a circle is _________. 5. The biggest chord of a circle is ______. 6. The lengths of the radii of a circle are _______.

9356.

Fill in the blanks with suitable words: 1. Diameter of a circle is ___ its radius. 2. Radius of a circle is its diameter. 3. The diameters of a circle intersect at the . 4. The chord passing through the centre of a circle is _. 5. The biggest chord of a circle is . 6. The lengths of the radii of a circle are _____.

Answer»

Fill in the blanks with suitable words:

1. Diameter of a circle is _______ its radius.

2. Radius of a circle is ______ its diameter.

3. The diameters of a circle intersect at the ______.

4. The chord passing through the centre of a circle is _________.

5. The biggest chord of a circle is ______.

6. The lengths of the radii of a circle are _______.

Discussion

9357.	Evaluate the GCD of 144 and 108 using Factor Tree.
Answer» Evaluate the GCD of 144 and 108 using Factor Tree.

Discussion

9358.	The graph below shows the number of people of different age groups staying in a hotel. Find the correct statement(s) among the options.
Answer» The graph below shows the number of people of different age groups staying in a hotel. Find the correct statement(s) among the options.

Discussion

9359.	In the given diagram, ∠XOB and ∠OO\|Q are called ________.
Answer» In the given diagram, $∠$ XOB and $∠$ OO^\|Q are called ________.

9359.

In the given diagram, ∠XOB and ∠OO|Q are called ________.

Answer»

In the given diagram, $∠$ XOB and $∠$ OO^|Q are called ________.

Discussion

9360.	Use a suitable identity and simplify x2+6x+9.
Answer» $Use a suitable identity and simplify x^{2} + 6 x + 9.$

Discussion

9361.	The roster form of the set {x:x=n2n+1,where n ϵ N and n<4} is ________.
Answer» The roster form of the set ${x : x = \frac{n}{2 n + 1}, where n ϵ N and n < 4}$ is ________.

Discussion

9362.	Simplify the expression: −5xy2z+9y2+5xzy2+10
Answer» Simplify the expression: $- 5 x y^{2} z + 9 y^{2} + 5 x z y^{2} + 10$

Discussion

9363.	Mohan deposits Rs 2,000 in his bank account and withdraws Rs 1,642 from it, the next day. If withdrawal of amount from the account is represented by a negative integer, then how will you represent the amount deposited? Find the balance in Mohan’s account after the withdrawal.
Answer» Mohan deposits Rs 2,000 in his bank account and withdraws Rs 1,642 from it, the next day. If withdrawal of amount from the account is represented by a negative integer, then how will you represent the amount deposited? Find the balance in Mohan’s account after the withdrawal.

Discussion

9364.	Express 315 as an improper fraction.
Answer» Express $3 \frac{1}{5}$ as an improper fraction.

Discussion

9365.	Is there any difference between closure property and normal multiplication
Answer» Is there any difference between closure property and normal multiplication

Discussion

9366.	is a polynomial that represents the number pattern 1, 8, 27, 64, 125… (x being a natural number)
Answer» is a polynomial that represents the number pattern 1, 8, 27, 64, 125… ( $x$ being a natural number)

Discussion

9367.	On the number line, the value of (−3)×3 lies on the right hand side of:
Answer» On the number line, the value of $(- 3) \times 3$ lies on the right hand side of:

Discussion

9368.	In a class, mathematics is the favourite subject of two-thirds of the class. What is the central angle of the sector representing this group in a pie chart?
Answer» In a class, mathematics is the favourite subject of two-thirds of the class. What is the central angle of the sector representing this group in a pie chart?

Discussion

9369.	the following number of a goals were scored by team 10 matchs 2,3,4,5,0,1,3,3,4,3 find the mean , median , and mode of score
Answer» the following number of a goals were scored by team 10 matchs 2,3,4,5,0,1,3,3,4,3 find the mean , median , and mode of score

Discussion

9370.	Question 7 (ii)Without adding, find the sum:1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19
Answer» Question 7 (ii) Without adding, find the sum: 1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19

9370.

Question 7 (ii)Without adding, find the sum:1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19

Answer»

Question 7 (ii)

Without adding, find the sum:

1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19

Discussion

9371.	If the interest is compounded half yearly calculate the amount when principle is ruppess 7400 the rate of interest is 5%and the duration is one year
Answer» If the interest is compounded half yearly calculate the amount when principle is ruppess 7400 the rate of interest is 5%and the duration is one year

Discussion

9372.	Use counters to subtract 2−(−1).You start with:You subtract:Which picture shows the difference?
Answer» Use counters to subtract $2 - (- 1) .$ You start with: You subtract: Which picture shows the difference?

Discussion

9373.	What is the included angle between the hour hand and the minute hand, if the time shown by the clock is 06:30?
Answer» What is the included angle between the hour hand and the minute hand, if the time shown by the clock is 06:30?

Discussion

9374.	Which of the given shapes is wrongly labeled?
Answer» Which of the given shapes is wrongly labeled?

Discussion

9375.	Question 2 The runs scored in a cricket match by 11 players is as follows: 6, 15, 120, 50, 100, 80, 10, 15, 8, 10,15 Find the mean, mode and median of this data. Are the three same?
Answer» Question 2 The runs scored in a cricket match by 11 players is as follows: 6, 15, 120, 50, 100, 80, 10, 15, 8, 10,15 Find the mean, mode and median of this data. Are the three same?

Discussion

9376.	Nandini scored 552 marks out of 600 in the 7th standard annual examination. Find the percentage of marks scored by her.
Answer» Nandini scored 552 marks out of 600 in the 7^th standard annual examination. Find the percentage of marks scored by her.

Discussion

9377.	The stop signal is placed 139 km beforethe warning sign board which is placed at theposition '0'.What is the correct position of the stop signal?
Answer» $The stop signal is placed \frac{13}{9} km before$ $the warning sign board which is placed at the$ $position '0'.$ What is the correct position of the stop signal?

Discussion

9378.	Find the value of a: 5a-20 = 0
Answer» Find the value of a: 5a-20 = 0

Discussion

9379.	there are two sets A\{1,2,3,4,5,6,\} andB\{1,2,3,4\} .the number of functions definedcfrom A toB such that element 2 in B has exactly 3 elements in A is equal t
Answer» there are two sets A\{1,2,3,4,5,6,\} andB\{1,2,3,4\} .the number of functions definedcfrom A toB such that element 2 in B has exactly 3 elements in A is equal t

Discussion

9380.	Why do we multiplying both the sides of equation by X to make it equal?please explain with a question
Answer» Why do we multiplying both the sides of equation by X to make it equal?please explain with a question

Discussion

9381.	The perimeter of a certain sector of a circle of radius 5.7 m is 27.2 m. Find the area of the sector.
Answer» The perimeter of a certain sector of a circle of radius 5.7 m is 27.2 m. Find the area of the sector.

Discussion

9382.	Question 89 Sachin and Sanjana are calculating 23 % of 800. Now, calculate 52 % of 700 using both the ways described above. Which way do you find easier?
Answer» Question 89 Sachin and Sanjana are calculating 23 % of 800. Now, calculate 52 % of 700 using both the ways described above. Which way do you find easier?

9382.

Question 89 Sachin and Sanjana are calculating 23 % of 800. Now, calculate 52 % of 700 using both the ways described above. Which way do you find easier?

Answer»

Question 89

Sachin and Sanjana are calculating 23 % of 800.

Now, calculate 52 % of 700 using both the ways described above.
Which way do you find easier?

Discussion

9383.	16. Eight dice are thrown 6561 times. How many times can one expect at least two dice to show a 2 or 3 or 4 or 5?
Answer» 16. Eight dice are thrown 6561 times. How many times can one expect at least two dice to show a 2 or 3 or 4 or 5?

Discussion

9384.	88.Let a and b be positive integers such that (ab + 1) divides (a2 + b2). Show that (a2 + b2 )/ (ab + 1) is the square of an integer.
Answer» 88.Let a and b be positive integers such that (ab + 1) divides (a2 + b2). Show that (a2 + b2 )/ (ab + 1) is the square of an integer.

Discussion

9385.	Two quantities were in the ratio 1 : 4. On increasing the smaller one by 6 and decreasing the Larger one by 6, The quantities are now in the ratio 7 : 13. What were the original quantities ?
Answer» Two quantities were in the ratio 1 : 4. On increasing the smaller one by 6 and decreasing the Larger one by 6, The quantities are now in the ratio 7 : 13. What were the original quantities ?

9385.

Two quantities were in the ratio 1 : 4. On increasing the smaller one by 6 and decreasing the Larger one by 6, The quantities are now in the ratio 7 : 13. What were the original quantities ?

Answer»

Two quantities were in the ratio 1 : 4. On increasing the smaller one by 6 and decreasing the Larger one by 6, The quantities are now in the ratio 7 : 13.

What were the original quantities ?

Discussion

9386.	If the length of a rectangle is 4x and its breadth is 2x, then the area of the rectangle is:
Answer» If the length of a rectangle is $4 x$ and its breadth is $2 x$ , then the area of the rectangle is:

Discussion

9387.	Find the missing term:2,2,4,4,6,8,8,?
Answer» Find the missing term:2,2,4,4,6,8,8,?

Discussion

9388.	Question 41 In questions 24 to 59, fill in the blanks to make the statements true. Sonal bought a bed sheet for Rs. 400 and sold it for Rs. 440. Her ___ % is ___ %.
Answer» Question 41 In questions 24 to 59, fill in the blanks to make the statements true. Sonal bought a bed sheet for Rs. 400 and sold it for Rs. 440. Her ___ % is ___ %.

9388.

Question 41 In questions 24 to 59, fill in the blanks to make the statements true. Sonal bought a bed sheet for Rs. 400 and sold it for Rs. 440. Her _ % is _ %.

Answer»

Question 41

In questions 24 to 59, fill in the blanks to make the statements true.
Sonal bought a bed sheet for Rs. 400 and sold it for Rs. 440. Her ___ % is ___ %.

Discussion

9389.	The perimeter of a triangle is 50cm. one side of a triangle is 4cm longer than the smaller side and the third side is 6 cm less than twice the smaller side. Find the area of the triangle.
Answer» The perimeter of a triangle is 50cm. one side of a triangle is 4cm longer than the smaller side and the third side is 6 cm less than twice the smaller side. Find the area of the triangle.

Discussion

9390.	A dealer gets the cost price of 15 oranges by selling 12 oranges. What is the percentage profit?
Answer» A dealer gets the cost price of 15 oranges by selling 12 oranges. What is the percentage profit?

Discussion

9391.	Question 11 Out of the following which is a 3-D figure? a) Square b) Sphere c) Triangle d) Circle
Answer» Question 11 Out of the following which is a 3-D figure? a) Square b) Sphere c) Triangle d) Circle

9391.

Question 11 Out of the following which is a 3-D figure? a) Square b) Sphere c) Triangle d) Circle

Answer»

Question 11
Out of the following which is a 3-D figure?

a) Square

b) Sphere

c) Triangle

d) Circle

Discussion

9392.	Three angles together constitute a right angle i.e. 90∘. One of them is 30∘, second one is twice the third one. Find the third angle.
Answer» Three angles together constitute a right angle i.e. $90^{\circ}$ . One of them is $30^{\circ}$ , second one is twice the third one. Find the third angle.

Discussion

9393.	what is the difference between decibles and hertz
Answer» what is the difference between decibles and hertz

Discussion

9394.	Six bells start commencing tolling at intervals of 2, 4, 6, 8, 10, 12 minutes respectively.In 30 hours, how many times do they toll together?
Answer» Six bells start commencing tolling at intervals of 2, 4, 6, 8, 10, 12 minutes respectively.In 30 hours, how many times do they toll together?

Discussion

9395.	The area of the obtuse angle triangle shown below is:
Answer» The area of the obtuse angle triangle shown below is:

Discussion

9396.	Simplify: 516-314+313+4.
Answer» Simplify: $5 \frac{1}{6} - 3 \frac{1}{4} + 3 \frac{1}{3} + 4$ .

Discussion

9397.	For two sets A={2,4,8,3,5};B={2,4,6,8}, tap on the bubbles which are elements of the set A∪B.
Answer» For two sets $A = {2, 4, 8, 3, 5}; B = {2, 4, 6, 8},$ tap on the bubbles which are elements of the set $A \cup B .$

Discussion

9398.	30. ABC is a right angle triangle at B On side AC a point P Is taken such that AP=PC AB=BP FIND MEAUSER OF angle CAB
Answer» 30. ABC is a right angle triangle at B On side AC a point P Is taken such that AP=PC AB=BP FIND MEAUSER OF angle CAB

Discussion

9399.	The total surface area of a cylinder is 462cm² . its curved surface area is one third of its total surface area. Find the volume of the cylinder
Answer» The total surface area of a cylinder is 462cm² . its curved surface area is one third of its total surface area. Find the volume of the cylinder

Discussion

9400.	The measure of the obtuse ∠EOF is:
Answer» The measure of the obtuse $∠ E O F$ is:

Discussion

Explore topic-wise InterviewSolutions in .

A bus moves with a speed of 40 km/h and covers a distance of 20 km. What is the total time taken by the bus during the whole journey?

Question 2(v)Express the following numbers in usual form:5.8×1012

What is the perimeter of the below shape? cm

Question 18 If 90 % of x is 315 km, then the value of x is (a) 325 km (b) 350 km (c) 405 km (d) 340 km

Evaluate the GCD of 144 and 108 using Factor Tree.

The graph below shows the number of people of different age groups staying in a hotel. Find the correct statement(s) among the options.

In the given diagram, ∠XOB and ∠OO|Q are called ________.

Use a suitable identity and simplify x2+6x+9.

The roster form of the set {x:x=n2n+1,where n ϵ N and n&lt;4} is ________.

Simplify the expression: −5xy2z+9y2+5xzy2+10

Mohan deposits Rs 2,000 in his bank account and withdraws Rs 1,642 from it, the next day. If withdrawal of amount from the account is represented by a negative integer, then how will you represent the amount deposited? Find the balance in Mohan’s account after the withdrawal.

Express 315 as an improper fraction.

Is there any difference between closure property and normal multiplication

is a polynomial that represents the number pattern 1, 8, 27, 64, 125… (x being a natural number)

On the number line, the value of (−3)×3 lies on the right hand side of:

In a class, mathematics is the favourite subject of two-thirds of the class. What is the central angle of the sector representing this group in a pie chart?

the following number of a goals were scored by team 10 matchs 2,3,4,5,0,1,3,3,4,3 find the mean , median , and mode of score

Question 7 (ii)Without adding, find the sum:1 +3 + 5+7 + 9 +11 +13+ 15 + 17+19

If the interest is compounded half yearly calculate the amount when principle is ruppess 7400 the rate of interest is 5%and the duration is one year

Use counters to subtract 2−(−1).You start with:You subtract:Which picture shows the difference?

What is the included angle between the hour hand and the minute hand, if the time shown by the clock is 06:30?

Which of the given shapes is wrongly labeled?

Question 2 The runs scored in a cricket match by 11 players is as follows: 6, 15, 120, 50, 100, 80, 10, 15, 8, 10,15 Find the mean, mode and median of this data. Are the three same?

Nandini scored 552 marks out of 600 in the 7th standard annual examination. Find the percentage of marks scored by her.

The stop signal is placed 139 km beforethe warning sign board which is placed at theposition '0'.What is the correct position of the stop signal?

Find the value of a: 5a-20 = 0

there are two sets A\{1,2,3,4,5,6,\} andB\{1,2,3,4\} .the number of functions definedcfrom A toB such that element 2 in B has exactly 3 elements in A is equal t

Why do we multiplying both the sides of equation by X to make it equal?please explain with a question

The perimeter of a certain sector of a circle of radius 5.7 m is 27.2 m. Find the area of the sector.

Question 89 Sachin and Sanjana are calculating 23 % of 800. Now, calculate 52 % of 700 using both the ways described above. Which way do you find easier?

16. Eight dice are thrown 6561 times. How many times can one expect at least two dice to show a 2 or 3 or 4 or 5?

88.Let a and b be positive integers such that (ab + 1) divides (a2 + b2). Show that (a2 + b2 )/ (ab + 1) is the square of an integer.

Two quantities were in the ratio 1 : 4. On increasing the smaller one by 6 and decreasing the Larger one by 6, The quantities are now in the ratio 7 : 13. What were the original quantities ?

If the length of a rectangle is 4x and its breadth is 2x, then the area of the rectangle is:

Find the missing term:2,2,4,4,6,8,8,?

Question 41 In questions 24 to 59, fill in the blanks to make the statements true. Sonal bought a bed sheet for Rs. 400 and sold it for Rs. 440. Her ___ % is ___ %.

The perimeter of a triangle is 50cm. one side of a triangle is 4cm longer than the smaller side and the third side is 6 cm less than twice the smaller side. Find the area of the triangle.

A dealer gets the cost price of 15 oranges by selling 12 oranges. What is the percentage profit?

Question 11 Out of the following which is a 3-D figure? a) Square b) Sphere c) Triangle d) Circle

Three angles together constitute a right angle i.e. 90∘. One of them is 30∘, second one is twice the third one. Find the third angle.

what is the difference between decibles and hertz

Six bells start commencing tolling at intervals of 2, 4, 6, 8, 10, 12 minutes respectively.In 30 hours, how many times do they toll together?

The area of the obtuse angle triangle shown below is:

Simplify: 516-314+313+4.

For two sets A={2,4,8,3,5};B={2,4,6,8}, tap on the bubbles which are elements of the set A∪B.

30. ABC is a right angle triangle at B On side AC a point P Is taken such that AP=PC AB=BP FIND MEAUSER OF angle CAB

The total surface area of a cylinder is 462cm² . its curved surface area is one third of its total surface area. Find the volume of the cylinder

The measure of the obtuse ∠EOF is:

The roster form of the set {x:x=n2n+1,where n ϵ N and n<4} is ________.

Question 41 In questions 24 to 59, fill in the blanks to make the statements true. Sonal bought a bed sheet for Rs. 400 and sold it for Rs. 440. Her _ % is _ %.