Mathematics Class 7th

41. The reciprocal of 1/a is ____

A. A^-1.

B. A^0

C. None of these

42. Something divided by zero is undefined.

A. True.

B. False

43. A number is called a _______ if it is the square of a whole number.

A. Perfect square

B. Imperfect square

C. None of these

44. The square of even number is ______.

A. Even

B. Odd

C. None of these

45. The fraction of a proper fraction is______ than itself.

A. Less

B. Greater

C. None of these

46. The square of decimal less than ______ is smaller than the decimal.

A. 1

B. 3

C. 4

47. Check the following number, whether they are perfect square or not.

A. 16

B. Yes

C. No

48. Find the square of the number: 35

A. 1225

B. 1224

C. 1221

49. Find the square of the number: 1.25

A. 1.5625

B. 1.3864

C. 1.4625

50. Do not take square and tell whether the square of the number will be even or odd: 751

A. Even

B. Odd

51. Do not take square and tell whether the square of the number will be even or odd: 32507

A. Even

B. Odd

52. ________of number is a number, whose square gives the same number.

A. Square root

B. Perfect root

C. None of these

53. We shall find the square root of a number by the division method and by the _________.

A. Factorization method

B. Simplification method

C. None of these

54. Find the square root of 784.

A. 28

B. 34

C. 23

55. Find the square root of 6889.

A. 83

B. 84

C. 86

56. The square root of fraction is equal to the square root of its numerator divide by the square root of is denominator is called _______.

A. factorization method

B. division method

C. none of these

57. Find the square root of 145 (144/169)

A.  157/13

B.  157/16

C. 159/12 

58. Find the square root of 30.3601

A. 5.51

B. 5.32

C. 5.42

59. Find the square root by division method: 3481

A. 59

B. 60

C. 57

60. Find the square root by division method: 50.253921

A. 7.089

B. 6.089

C. 5.089