19743 + Interview Questions in Mathematics

1.	The sum of digits of a two-digit number is 9. The digit at ten's place is twice the digit at unit's place. Then the number is
Answer» The sum of digits of a two-digit number is 9. The digit at ten's place is twice the digit at unit's place. Then the number is

Discussion

2.	Convert 54km/h to m/s.15
Answer» Convert 54km/h to m/s. 15

Discussion

3.	Question 61 What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?
Answer» Question 61 What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?

Discussion

4.	A door of length 2 m and breadth 1 m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m. Find the cost of white washing the wall is Rs. 20 per m2.
Answer» A door of length $2 m$ and breadth $1 m$ is fitted in a wall. The length of the wall is $4.5 m$ and the breadth is $3.6 m$ . Find the cost of white washing the wall is $R s . 20$ per $m^{2}$ .

Discussion

5.	A man bought some eggs at R's. 18 per dozen and equal no. at R's. 20 per dozen. He mixed them and sold them at R's. 23.75 per dozen. Find his gain %.
Answer» A man bought some eggs at R's. 18 per dozen and equal no. at R's. 20 per dozen. He mixed them and sold them at R's. 23.75 per dozen. Find his gain %.

Discussion

6.	The angle of rotation for the given figure is 60∘. At what other angles of rotation will you get the same figure?
Answer» The angle of rotation for the given figure is $60^{\circ}$ . At what other angles of rotation will you get the same figure?

Discussion

7.	Find the order of rotational symmetry for the figure given below. ___
Answer» Find the order of rotational symmetry for the figure given below. ___

7.

Find the order of rotational symmetry for the figure given below. ___

Answer»

Find the order of rotational symmetry for the figure given below.

___

Discussion

8.	A shopkeeper bought a table for Rs 5,000 and sold it for Rs 6,500. What was the profit percentage that he made?
Answer» A shopkeeper bought a table for Rs 5,000 and sold it for Rs 6,500. What was the profit percentage that he made?

Discussion

9.	Sona heads a record of winning 2 boxing matches every 3 she loses. If she had 45 matches last year how many did she win?
Answer» Sona heads a record of winning 2 boxing matches every 3 she loses. If she had 45 matches last year how many did she win?

Discussion

10.	The following are the steps for the construction of a circumcircle for a regular polygon. Arrange them in proper order. (a): Let the perpendicular bisectors intersect at point O. (b): With O as a centre and OA as radius draw a circle passing through the vertices of the given polygon. (c): Draw the perpendicular bisector of any two sides of the polygon. (d): Construct the regular polygon ABCDE....
Answer» The following are the steps for the construction of a circumcircle for a regular polygon. Arrange them in proper order. (a): Let the perpendicular bisectors intersect at point O. (b): With O as a centre and OA as radius draw a circle passing through the vertices of the given polygon. (c): Draw the perpendicular bisector of any two sides of the polygon. (d): Construct the regular polygon ABCDE....

10.

The following are the steps for the construction of a circumcircle for a regular polygon. Arrange them in proper order. (a): Let the perpendicular bisectors intersect at point O. (b): With O as a centre and OA as radius draw a circle passing through the vertices of the given polygon. (c): Draw the perpendicular bisector of any two sides of the polygon. (d): Construct the regular polygon ABCDE....

Answer»

The following are the steps for the construction of a circumcircle for a regular polygon. Arrange them in proper order.

(a): Let the perpendicular bisectors intersect at point O.

(b): With O as a centre and OA as radius draw a circle passing through the vertices of the given polygon.

(c): Draw the perpendicular bisector of any two sides of the polygon.

(d): Construct the regular polygon ABCDE....

Discussion

11.	The dimension of following cuboid is:
Answer» The dimension of following cuboid is:

11.

The dimension of following cuboid is:

Answer»

The dimension of following cuboid is:

Discussion

12.	Which of the following angle is obtuse angle:
Answer» Which of the following angle is obtuse angle:

12.

Which of the following angle is obtuse angle:

Answer»

Which of the following angle is obtuse angle:

Discussion

13.	A dishonest shopkeeper declares that he sells his items at cost price, but actually, he uses a false weight of 850 gm for 1 kg. His gain percent is,
Answer» A dishonest shopkeeper declares that he sells his items at cost price, but actually, he uses a false weight of 850 gm for 1 kg. His gain percent is,

Discussion

14.	Find the area of the lawn (in cm2) if each grass bed has a length of 15 cm and width of 10 cm.
Answer» Find the area of the lawn (in cm²) if each grass bed has a length of 15 cm and width of 10 cm.

14.

Find the area of the lawn (in cm2) if each grass bed has a length of 15 cm and width of 10 cm.

Answer»

Find the area of the lawn (in cm²) if each grass bed has a length of 15 cm and width of 10 cm.

Discussion

15.	Factorise: x2+10x+25
Answer» Factorise: $x^{2} + 10 x + 25$

Discussion

16.	After reading 79 of a book, 40 pages are left. How many pages are there in the book ?
Answer» After reading $\frac{7}{9}$ of a book, 40 pages are left. How many pages are there in the book ?

Discussion

17.	Question 1(h) Solve the following equations : 6z+10=-2
Answer» Question 1(h) Solve the following equations : 6z+10=-2

Discussion

18.	A pizza is divided into 12 equal pieces. If Atul takes 4 pieces, then the fraction of the pizza taken by him is .
Answer» A pizza is divided into 12 equal pieces. If Atul takes 4 pieces, then the fraction of the pizza taken by him is .

Discussion

19.	Question 55 Fill in the blanks to make the statement true. In an isosceles triangle, two angles are always ___
Answer» Question 55 Fill in the blanks to make the statement true. In an isosceles triangle, two angles are always ___

19.

Question 55 Fill in the blanks to make the statement true. In an isosceles triangle, two angles are always ___

Answer»

Question 55

Fill in the blanks to make the statement true.

In an isosceles triangle, two angles are always ___

Discussion

20.	Question 44 State whether the given statements are true or false (−3)4=−12
Answer» Question 44 State whether the given statements are true or false $(- 3)^{4} = - 12$

20.

Question 44 State whether the given statements are true or false (−3)4=−12

Answer»

Question 44

State whether the given statements are true or false
$(- 3)^{4} = - 12$

Discussion

21.	Question 71 Subtract the sum of 12ab−10b2−18a2 and 9ab+12b2+14a2 from the sum of ab+2b2 and 3b2−a2.
Answer» Question 71 Subtract the sum of $12 a b - 10 b^{2} - 18 a^{2}$ and $9 a b + 12 b^{2} + 14 a^{2}$ from the sum of $a b + 2 b^{2}$ and $3 b^{2} - a^{2} .$

21.

Question 71 Subtract the sum of 12ab−10b2−18a2 and 9ab+12b2+14a2 from the sum of ab+2b2 and 3b2−a2.

Answer»

Question 71

Subtract the sum of $12 a b - 10 b^{2} - 18 a^{2}$ and $9 a b + 12 b^{2} + 14 a^{2}$ from the sum of $a b + 2 b^{2}$ and $3 b^{2} - a^{2} .$

Discussion

22.	Give me some examples of use of probability in daily life?
Answer» Give me some examples of use of probability in daily life?

Discussion

23.	The line of symmetry for the following figure is:
Answer» The line of symmetry for the following figure is:

23.

The line of symmetry for the following figure is:

Answer»

The line of symmetry for the following figure is:

Discussion

24.	In the diagram below, line l is parallel to line m, identify the value of x.
Answer» In the diagram below, line l is parallel to line m, identify the value of x.

24.

In the diagram below, line l is parallel to line m, identify the value of x.

Answer»

In the diagram below, line l is parallel to line m, identify the value of x.

Discussion

25.	What rate will yield Rs 2400 as interest on the sum of Rs 40000 in 3 years?
Answer» What rate will yield Rs 2400 as interest on the sum of Rs 40000 in 3 years?

25.

What rate will yield Rs 2400 as interest on the sum of Rs 40000 in 3 years?

Answer»

What rate will yield Rs 2400 as interest on the sum of Rs 40000 in 3 years?

Discussion

26.	Division of two numbers is zero. If one of the numbers is -567, then other one is
Answer» Division of two numbers is zero. If one of the numbers is -567, then other one is

Discussion

27.	Three squares are constructed on each side of the triangle as shown, with the length of each square equal to the side of the triangle on which it is constructed. The angle opposite to the blue colour square is the right angle. If the two small sides are 8 cm and 15 cm, then the area of the blue square is _____.
Answer» Three squares are constructed on each side of the triangle as shown, with the length of each square equal to the side of the triangle on which it is constructed. The angle opposite to the blue colour square is the right angle. If the two small sides are 8 cm and 15 cm, then the area of the blue square is _____.

Discussion

28.	A polygon having rotational symmetry of order more than 1 cannot have angle of rotation equal to
Answer» A polygon having rotational symmetry of order more than 1 cannot have angle of rotation equal to

Discussion

29.	Question 1 (c) Find the ratio of: c) 9 m to 27 cm
Answer» Question 1 (c) Find the ratio of: c) 9 m to 27 cm

Discussion

30.	differece between rational number and fraction
Answer» differece between rational number and fraction

Discussion

31.	Statements: L N, J © P, P L Conclusions: a) J & L b) P ! N
Answer» Statements: L N, J © P, P L Conclusions: a) J & L b) P ! N

31.

Statements: L N, J © P, P L Conclusions: a) J & L b) P ! N

Answer»

Statements: L N, J © P, P L

Conclusions:

a) J & L

b) P ! N

Discussion

32.	Which of these in not a rational number? 39,−411,√2,π [2 MARKS]
Answer» Which of these in not a rational number? $\frac{3}{9}, \frac{- 4}{11}, \sqrt{2}, π$ [2 MARKS]

Discussion

33.	Question 87 The sum of squares of first n natural numbers is given by 16n(n+1)(2n+1) or 16(2n3+3n2+n). Find the sum of squares of the first 10 natural numbers.
Answer» Question 87 The sum of squares of first n natural numbers is given by $\frac{1}{6} n (n + 1) (2 n + 1)$ or $\frac{1}{6} (2 n^{3} + 3 n^{2} + n)$ . Find the sum of squares of the first 10 natural numbers.

33.

Question 87 The sum of squares of first n natural numbers is given by 16n(n+1)(2n+1) or 16(2n3+3n2+n). Find the sum of squares of the first 10 natural numbers.

Answer»

Question 87

The sum of squares of first n natural numbers is given by $\frac{1}{6} n (n + 1) (2 n + 1)$ or $\frac{1}{6} (2 n^{3} + 3 n^{2} + n)$ . Find the sum of squares of the first 10 natural numbers.

Discussion

34.	Raymond bought 5 rolls of paper towels. He got 9945 meters of paper towels in all. How many meters of paper towels were on each roll ?
Answer» Raymond bought 5 rolls of paper towels. He got 99 $\frac{4}{5}$ meters of paper towels in all. How many meters of paper towels were on each roll ?

Discussion

35.	Draw a circle with center O with radius 7cm. Draw any one of the diameters AB. With same center O, draw another circle with radius 4cm. Draw any one of the diameters CD for this circle too. If you join the ends of both the diameters, the figure you will get is:
Answer» Draw a circle with center O with radius $7 c m$ . Draw any one of the diameters AB. With same center O, draw another circle with radius $4 c m$ . Draw any one of the diameters CD for this circle too. If you join the ends of both the diameters, the figure you will get is:

Discussion

36.	Question 33 In the given figure, a=40∘. The value of b is (a) 20∘ (b) 24∘ (c) 36∘ (d) 120∘
Answer» Question 33 In the given figure, $a = 40^{\circ}$ . The value of b is (a) $20^{\circ}$ (b) $24^{\circ}$ (c) $36^{\circ}$ (d) $120^{\circ}$

36.

Question 33 In the given figure, a=40∘. The value of b is (a) 20∘ (b) 24∘ (c) 36∘ (d) 120∘

Answer»

Question 33

In the given figure, $a = 40^{\circ}$ . The value of b is

(a) $20^{\circ}$
(b) $24^{\circ}$
(c) $36^{\circ}$
(d) $120^{\circ}$

Discussion

37.	What is the measure of ∠DAB.
Answer» What is the measure of $∠ D A B$ .

Discussion

38.	Can you please tell me how can we solve the sums easily
Answer» Can you please tell me how can we solve the sums easily

Discussion

39.	Meet saves ₹ 4000 from her salary. If this is 10% of her salary. What is her salary and also find her net expenditure? However, Meet wanted to buy a bike, so she started to save 30% of her salary. How much is she saving now? [4 MARKS]
Answer» Meet saves ₹ 4000 from her salary. If this is $10 %$ of her salary. What is her salary and also find her net expenditure? However, Meet wanted to buy a bike, so she started to save $30 %$ of her salary. How much is she saving now? [4 MARKS]

Discussion

40.	(a) What kind of numbers do you get if you add consecutive triangular numbers? Give examples. (b) ∠E is a complement of ∠F and ∠E= 28∘. Find ∠F. [2 MARKS]
Answer» (a) What kind of numbers do you get if you add consecutive triangular numbers? Give examples. (b) $∠ E$ is a complement of $∠ F$ and $∠ E$ = $28^{\circ}$ . Find $∠ F$ . [2 MARKS]

Discussion

41.	At a car park there are 100 vehicles, 60 of which are cars, 30 are vans and the remaining are lorries. If every vehicle is equally likely to leave, find the probability of a van leaving first.
Answer» At a car park there are 100 vehicles, 60 of which are cars, 30 are vans and the remaining are lorries. If every vehicle is equally likely to leave, find the probability of a van leaving first.

Discussion

42.	Find the mean proportion of 4 and 64
Answer» Find the mean proportion of 4 and 64

Discussion

43.	What number should be added to -3 to get -30?
Answer» What number should be added to -3 to get -30?

Discussion

44.	Which of the following should be the FIRST sentence after rearrangement?
Answer» Which of the following should be the FIRST sentence after rearrangement?

Discussion

45.	Given ∠P = 70o and ∠Q = 115o. Which of the following part is required to construct triangle PQR?
Answer» Given ∠P = 70^o and ∠Q = 115^o. Which of the following part is required to construct triangle PQR?

Discussion

46.	An experiment of tossing a coin 1000 times is performed. What is the probability that the occurrence of a head is greater than 1000 times?
Answer» An experiment of tossing a coin 1000 times is performed. What is the probability that the occurrence of a head is greater than 1000 times?

Discussion

47.	One day Garima was travelling back to her house on a scooter. She travelled a distance of 16 km in 4 litres of petrol. The next day she decided to go to museum which was 36 km far away from her house. How much petrol will she need to go to museum from her house?
Answer» One day Garima was travelling back to her house on a scooter. She travelled a distance of 16 km in 4 litres of petrol. The next day she decided to go to museum which was 36 km far away from her house. How much petrol will she need to go to museum from her house?

Discussion

48.	______ is rectangular blocks that can have their base at either the vertical axis or horizontal axis.
Answer» ______ is rectangular blocks that can have their base at either the vertical axis or horizontal axis.

Discussion

49.	In a business , Shyam and Rahul invests 38 and 58 of the total investment. If ₹ 48,000 is the total investment.Who invested more and by how much ?
Answer» In a business , Shyam and Rahul invests $\frac{3}{8}$ and $\frac{5}{8}$ of the total investment. If ₹ 48,000 is the total investment.Who invested more and by how much ?

Discussion

50.	Match the ratios on the left to their most simplified forms.
Answer» Match the ratios on the left to their most simplified forms.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The sum of digits of a two-digit number is 9. The digit at ten's place is twice the digit at unit's place. Then the number is

Convert 54km/h to m/s.15

Question 61 What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?

A door of length 2 m and breadth 1 m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m. Find the cost of white washing the wall is Rs. 20 per m2.

A man bought some eggs at R's. 18 per dozen and equal no. at R's. 20 per dozen. He mixed them and sold them at R's. 23.75 per dozen. Find his gain %.

The angle of rotation for the given figure is 60∘. At what other angles of rotation will you get the same figure?

Find the order of rotational symmetry for the figure given below. ___

A shopkeeper bought a table for Rs 5,000 and sold it for Rs 6,500. What was the profit percentage that he made?

Sona heads a record of winning 2 boxing matches every 3 she loses. If she had 45 matches last year how many did she win?

The dimension of following cuboid is:

Which of the following angle is obtuse angle:

A dishonest shopkeeper declares that he sells his items at cost price, but actually, he uses a false weight of 850 gm for 1 kg. His gain percent is,

Find the area of the lawn (in cm2) if each grass bed has a length of 15 cm and width of 10 cm.

Factorise: x2+10x+25

After reading 79 of a book, 40 pages are left. How many pages are there in the book ?

Question 1(h) Solve the following equations : 6z+10=-2

A pizza is divided into 12 equal pieces. If Atul takes 4 pieces, then the fraction of the pizza taken by him is .

Question 55 Fill in the blanks to make the statement true. In an isosceles triangle, two angles are always ___

Question 44 State whether the given statements are true or false (−3)4=−12

Question 71 Subtract the sum of 12ab−10b2−18a2 and 9ab+12b2+14a2 from the sum of ab+2b2 and 3b2−a2.

Give me some examples of use of probability in daily life?

The line of symmetry for the following figure is:

In the diagram below, line l is parallel to line m, identify the value of x.

What rate will yield Rs 2400 as interest on the sum of Rs 40000 in 3 years?

Division of two numbers is zero. If one of the numbers is -567, then other one is

A polygon having rotational symmetry of order more than 1 cannot have angle of rotation equal to

Question 1 (c) Find the ratio of: c) 9 m to 27 cm

differece between rational number and fraction

Statements: L N, J © P, P L Conclusions: a) J &amp; L b) P ! N

Which of these in not a rational number? 39,−411,√2,π [2 MARKS]

Question 87 The sum of squares of first n natural numbers is given by 16n(n+1)(2n+1) or 16(2n3+3n2+n). Find the sum of squares of the first 10 natural numbers.

Raymond bought 5 rolls of paper towels. He got 9945 meters of paper towels in all. How many meters of paper towels were on each roll ?

Draw a circle with center O with radius 7cm. Draw any one of the diameters AB. With same center O, draw another circle with radius 4cm. Draw any one of the diameters CD for this circle too. If you join the ends of both the diameters, the figure you will get is:

Question 33 In the given figure, a=40∘. The value of b is (a) 20∘ (b) 24∘ (c) 36∘ (d) 120∘

What is the measure of ∠DAB.

Can you please tell me how can we solve the sums easily

Meet saves ₹ 4000 from her salary. If this is 10% of her salary. What is her salary and also find her net expenditure? However, Meet wanted to buy a bike, so she started to save 30% of her salary. How much is she saving now? [4 MARKS]

(a) What kind of numbers do you get if you add consecutive triangular numbers? Give examples. (b) ∠E is a complement of ∠F and ∠E= 28∘. Find ∠F. [2 MARKS]

At a car park there are 100 vehicles, 60 of which are cars, 30 are vans and the remaining are lorries. If every vehicle is equally likely to leave, find the probability of a van leaving first.

Find the mean proportion of 4 and 64

What number should be added to -3 to get -30?

Which of the following should be the FIRST sentence after rearrangement?

Given ∠P = 70o and ∠Q = 115o. Which of the following part is required to construct triangle PQR?

An experiment of tossing a coin 1000 times is performed. What is the probability that the occurrence of a head is greater than 1000 times?

One day Garima was travelling back to her house on a scooter. She travelled a distance of 16 km in 4 litres of petrol. The next day she decided to go to museum which was 36 km far away from her house. How much petrol will she need to go to museum from her house?

______ is rectangular blocks that can have their base at either the vertical axis or horizontal axis.

In a business , Shyam and Rahul invests 38 and 58 of the total investment. If ₹ 48,000 is the total investment.Who invested more and by how much ?

Match the ratios on the left to their most simplified forms.

Statements: L N, J © P, P L Conclusions: a) J & L b) P ! N