1907 + Interview Questions in Maths in Class 7

1.	One-third of the students of a class have chosen to play cricket. One-half of the students who have chosen to play cricket have also opted for painting classes. What fraction of students of the class have opted for painting class? If there are 30 students in the class, how many students have opted for a. cricket? b. painting class?
Answer» a. = `15` students. B. = `5` students. a. = `10` students. b. = `5` students. a. = `5` students. b. = `5` students. a. = `10` students. b. = `9` students. Answer :B

Discussion

2.	A rectangle is made up of 16 squares of side 1 cm each. What possible dimensions can the rectangle have ?
Answer» ANSWER :4 CM

Discussion

3.	If 6 books ₹ 615, how much do 10 books cost ?
Answer» ANSWER :₹ 1025

Discussion

4.	A rectangular grassy plot is 112 m long and 78 m broad. It has a 2.5-m-wide gravel path all around it on the inside. Find the area of the path and the cost of constructing it atRs. 120 per m^(2).
Answer» ANSWER :Rs.111000

Discussion

5.	A rectangular running track measures 300 m by 250 m. Parul takes 4 rounds of this park every evening. What distance does she run in a week ?
Answer» ANSWER :`7xx 4400 m`

Discussion

6.	Following is the number of children in 28 families ofa colony. 1, 2, 1, 3, 2, 1, 2, 4, 2, 2, 1, 3, 1, 2, 2, 2, 1, 1, 2, 3, 1, 2, 1, 2, 2, 1, 2, 3. Represent the above data in the form of frequency distribution.
Answer»

Discussion

7.	Express each of the following ratios in simplest form : 400 m : 1 km
Answer» ANSWER :`2 : 5 `

Discussion

8.	Evaluate: -584 div (-1)
Answer» ANSWER :584

Discussion

9.	Solve : 12.785 div 100
Answer» ANSWER :`0.12785`

Discussion

10.	Express 18 hours as apercentage of 3 days ₹ 6
Answer» ANSWER :`25% `12.5%``

Discussion

11.	Find the product:(i)3/5xx7/11(ii)5/8xx4/7(iii)4/9xx4/16(iv)8/15xx20(v)5/8xx1000(vi)3 1/8xx16(vii)2 4/15xx12(viii)3 6/7xx4 2/3
Answer» Answer :`21/55`, `5/14`, `5/12`, 6, `10 2/3`, 625, 50, `27 1/5`, 18, 14, 12, 10

Discussion

12.	Find the perimeter of a triangle whose sides are 2y+3z, z-y, 4y-2z.
Answer» SOLUTION :N/A

Discussion

13.	Simplify and express each of the following as a rational number : ((5)/(3))^(12) + ( ( 5)/(3))^(15)
Answer» ANSWER :` ( 27)/(125)`

Discussion

14.	Evaluate: a. (-792) div 24"b. " 648 div (-27) c. -4806 div (-18)"d. " [-72 div (-4)] div (-9)
Answer» ANSWER :a. -33B. -24 C. 267d. -2

Discussion

15.	Divide 13.3 inot the ratio 2:5
Answer» ANSWER :`3.8 :9.5=2:5.`

Discussion

16.	Sara takes 7 rounds of a park that measures 200 m by 150 m. What distance does she cover ? Express your answer in kilometers.
Answer» ANSWER :`4.9 KM`

Discussion

17.	Divide 1/2 div1/3
Answer» ANSWER :1`1/2`

Discussion

18.	Find the mode in each of the following data collection. d. 12, 13, 12, 15, 16, 16, 13, 12, 14, 18, 12, 12, 14, 15, 19, 12, 14
Answer» `10` `12` `9` `8` ANSWER :B

Discussion

19.	Find the product : 34.2 xx1.86
Answer» ANSWER :63.612

Discussion

20.	By actural division , express each of the following asa repeating decimal : 303/11
Answer» ANSWER :`27.bar(54)`

Discussion

21.	Add the sum of 36.67 and 42.098 to the sum of 54.66 and 12.34.
Answer» ANSWER :`143.768`

Discussion

22.	The weights of 10 students in a class are: 35 kg; 27 kg;36 kg;30 kg;29 kg;32 kg.;33 kg. ;28 kg. ;31 kg. ;38 kg a. Find the mean weight, b. minimum weight, and c. number of students whose weight is more than the mean weight, andd. range.
Answer» ANSWER :31.9 KG

Discussion

23.	Marks of 10 students in an English test are as follow, 9,10,7,11,12,6,8,14,15,18. Find. Range of the marks
Answer» `11` `12` `15` `18` ANSWER :B

Discussion

24.	A number consists of two digits that add up to 7. If 27 is added to this number, the digit get reversed. Find the number.
Answer» 24 25 30 29 Answer :B

Discussion

25.	Fill in lt or gt sign in the boxes without actually carrying out the multiplication. b. i. (9)/( 5) xx (8)/(13) square (9)/(5) ""ii. (9)/(5) xx (8)/(13) square (8)/(13)
Answer» ANSWER :`i. LT II. GT`

Discussion

26.	Subtract 3a^2-5a+6b-8 from 2a^2+4a+7ab+1
Answer» ANSWER :`-a^2+9a-7ab-6b+9`

Discussion

27.	Sarita had Rs. 10,500. She gave (3)/(5) of it to her friend Geeta. How much money is left with her?
Answer» ANSWER :RS. 4200

Discussion

28.	Write the additive inverse of: a. (-212). b. 666.
Answer» ANSWER :a. 212 B. -666

Discussion

29.	Subtract : ab-bc-ca from 3ab +2bc-4ca
Answer» SOLUTION :N/A

Discussion

30.	Multiply: c. 5 (1)/(3) xx 2
Answer» ANSWER :`10(2)/(3)`

Discussion

31.	Find 3.84 div 0.3
Answer» ANSWER :`=12.8`

Discussion

32.	Find the reciprocal of 1/1024
Answer» ANSWER :`1024`

Discussion

33.	Write down a pair of positive integers whose: a. sum is 10 "" b. difference is -3
Answer» ANSWER :a. 4 and 6B. 7 and 10

Discussion

34.	Express each of the following rations in simplest form :4 (1)/(2): 1 (1)/(8)
Answer» ANSWER :`4 : 1 `

Discussion

35.	The sum of two digits of a two-digit number is 11. If 63 is added to the number, the digits get reversed. Find the number.
Answer» ANSWER :29

Discussion

36.	A rectangle is made up of 12 square of side 1 cm. What possible dimensions can the rectangle have ?
Answer» Answer :`12 cm XX 1 cm,2cmX 6 cm, 4 cm xx 3 cm`

Discussion

37.	Arrange the following rational numbers in ascending order : (i) 3/4, 5/8, 11/16, 21/32, (ii) -2/5, 7/(-10), -8/15, 17/(-30) (iii) 5/(-12), -2/3, -7/9, 11/(-18), (iv) -4/7, 13/(-28), 9/14, 23/42
Answer» Answer :(i) `5/8, 21/32, 11/16, 3/4`, (ii) `7/10, 17/(-30), -8/15, -2/5` (iii) `-7/9, -2/3, 11/(-18), 5/(-12)` (iv) `-4/7, 13/(-28), 23/42, 9/14`

Discussion

38.	Which central tendency has been used to arrive at the following statements?The most common price of a certain type of calculator is 125.
Answer» ANSWER :MODE

Discussion

39.	A number is such that it is as much greater than 84 as it is less than 108. Find the number.
Answer» ANSWER :96

Discussion

40.	Find the reciprocal of: 1. (2)/(9)
Answer» ANSWER :`9/2`

Discussion

41.	Multiply th 0.08 76 xx 10
Answer» ANSWER :`0.876`

Discussion

42.	Marks of 10 students in an English test are as follow, 9,10,7,11,12,6,8,14,15,18. Find. Maximum marks obtained
Answer» `20` `43` `18` `8` Answer :C

Discussion

43.	If a collection of data has 20 observations, how will the median be calculated?
Answer» Answer :Data has to be ARRANGED in ascending/descending order; Median = mean of 10th and 11th OBSERVATIONS

Discussion

44.	ABCD is a diameter of a circle of radius 6 cm such that AB = BC = CD. Semicircles are drawn on AB and BD as diameters, as shown in the given figure. Find the area of the shaded region.
Answer» ANSWER :`37.71cm^(2)`

Discussion

45.	State whether true or false. -7 gt -8
Answer» ANSWER :T

Discussion

46.	Two poles of height 13 feet and 25 feet are standing at two ends of a 35 feet wide street. Find the distance between their tops.
Answer» ANSWER :37 FEET

Discussion

47.	Fill in the boxe using the symbols gt ,= or lt. 0.3 square 0.03
Answer» ANSWER :`GT`

Discussion

48.	One exterior angle of a triangle is 70^(@). The two opposite interior angles are in the ratio 2:5. find the angles of the triangle.
Answer» ANSWER :`20^(@),50^(@),110^(@)`

Discussion

49.	Find the three angles of a triangle that are in the ratio 2:3:4.
Answer» ANSWER :`40^(@),60^(@),80^(@)`.

Discussion

50.	Radha takes 4 h to travel from her village to her friends's city by bus. If she goes by car, whose speed is (2)/(3) times that of the bus, then how much time will she take to cover the same distance?
Answer» 3 h 8 h 12 h 6 h Solution :Let the speed of bus be s kmph. The speed of the car `= (2)/(3)` s kmph Let the distance between the village and the city be d km. `"Speed" XX "Time" = "Distance covered"` For bus, `d = s xx 4 ""(1)` For car, `d= (2s)/(3) xx t "" (2)` `RARR " From Eqs (1) and (2),"` ` s xx 4 = (2s)/(3) xx t` t = 6 h. Hence, the correct option is (d).

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A rectangle is made up of 16 squares of side 1 cm each. What possible dimensions can the rectangle have ?

If 6 books ₹ 615, how much do 10 books cost ?

A rectangular grassy plot is 112 m long and 78 m broad. It has a 2.5-m-wide gravel path all around it on the inside. Find the area of the path and the cost of constructing it atRs. 120 per m^(2).

A rectangular running track measures 300 m by 250 m. Parul takes 4 rounds of this park every evening. What distance does she run in a week ?

Following is the number of children in 28 families ofa colony. 1, 2, 1, 3, 2, 1, 2, 4, 2, 2, 1, 3, 1, 2, 2, 2, 1, 1, 2, 3, 1, 2, 1, 2, 2, 1, 2, 3. Represent the above data in the form of frequency distribution.

Express each of the following ratios in simplest form : 400 m : 1 km

Evaluate: -584 div (-1)

Solve : 12.785 div 100

Express 18 hours as apercentage of 3 days ₹ 6

Find the product:(i)3/5xx7/11(ii)5/8xx4/7(iii)4/9xx4/16(iv)8/15xx20(v)5/8xx1000(vi)3 1/8xx16(vii)2 4/15xx12(viii)3 6/7xx4 2/3

Find the perimeter of a triangle whose sides are 2y+3z, z-y, 4y-2z.

Simplify and express each of the following as a rational number : ((5)/(3))^(12) + ( ( 5)/(3))^(15)

Evaluate: a. (-792) div 24"b. " 648 div (-27) c. -4806 div (-18)"d. " [-72 div (-4)] div (-9)

Divide 13.3 inot the ratio 2:5

Sara takes 7 rounds of a park that measures 200 m by 150 m. What distance does she cover ? Express your answer in kilometers.

Divide 1/2 div1/3

Find the mode in each of the following data collection. d. 12, 13, 12, 15, 16, 16, 13, 12, 14, 18, 12, 12, 14, 15, 19, 12, 14

Find the product : 34.2 xx1.86

By actural division , express each of the following asa repeating decimal : 303/11

Add the sum of 36.67 and 42.098 to the sum of 54.66 and 12.34.

The weights of 10 students in a class are: 35 kg; 27 kg;36 kg;30 kg;29 kg;32 kg.;33 kg. ;28 kg. ;31 kg. ;38 kg a. Find the mean weight, b. minimum weight, and c. number of students whose weight is more than the mean weight, andd. range.

Marks of 10 students in an English test are as follow, 9,10,7,11,12,6,8,14,15,18. Find. Range of the marks

A number consists of two digits that add up to 7. If 27 is added to this number, the digit get reversed. Find the number.

Fill in lt or gt sign in the boxes without actually carrying out the multiplication. b. i. (9)/( 5) xx (8)/(13) square (9)/(5) ""ii. (9)/(5) xx (8)/(13) square (8)/(13)

Subtract 3a^2-5a+6b-8 from 2a^2+4a+7ab+1

Sarita had Rs. 10,500. She gave (3)/(5) of it to her friend Geeta. How much money is left with her?

Write the additive inverse of: a. (-212). b. 666.

Subtract : ab-bc-ca from 3ab +2bc-4ca

Multiply: c. 5 (1)/(3) xx 2

Find 3.84 div 0.3

Find the reciprocal of 1/1024

Write down a pair of positive integers whose: a. sum is 10 "" b. difference is -3

Express each of the following rations in simplest form :4 (1)/(2): 1 (1)/(8)

The sum of two digits of a two-digit number is 11. If 63 is added to the number, the digits get reversed. Find the number.

A rectangle is made up of 12 square of side 1 cm. What possible dimensions can the rectangle have ?

Arrange the following rational numbers in ascending order : (i) 3/4, 5/8, 11/16, 21/32, (ii) -2/5, 7/(-10), -8/15, 17/(-30) (iii) 5/(-12), -2/3, -7/9, 11/(-18), (iv) -4/7, 13/(-28), 9/14, 23/42

Which central tendency has been used to arrive at the following statements?The most common price of a certain type of calculator is 125.

A number is such that it is as much greater than 84 as it is less than 108. Find the number.

Find the reciprocal of: 1. (2)/(9)

Multiply th 0.08 76 xx 10

Marks of 10 students in an English test are as follow, 9,10,7,11,12,6,8,14,15,18. Find. Maximum marks obtained

If a collection of data has 20 observations, how will the median be calculated?

ABCD is a diameter of a circle of radius 6 cm such that AB = BC = CD. Semicircles are drawn on AB and BD as diameters, as shown in the given figure. Find the area of the shaded region.

State whether true or false. -7 gt -8

Two poles of height 13 feet and 25 feet are standing at two ends of a 35 feet wide street. Find the distance between their tops.

Fill in the boxe using the symbols gt ,= or lt. 0.3 square 0.03

One exterior angle of a triangle is 70^(@). The two opposite interior angles are in the ratio 2:5. find the angles of the triangle.

Find the three angles of a triangle that are in the ratio 2:3:4.

Radha takes 4 h to travel from her village to her friends's city by bus. If she goes by car, whose speed is (2)/(3) times that of the bus, then how much time will she take to cover the same distance?