71. Multiplicative inverse of 27 is
- (A) 2–7
- (B) 72
- (C) –27
- (D) –2–7
70. What is the value of (–1)an even number?
- (A) 1
- (B) 2
- (C) –1
- (D) 0
69. What is the value of (–1)an odd number?
- (A) 1
- (B) 2
- (C) –1
- (D) 0
68. The human body has about 100 billion cells. This number can be written in exponential form as
- (A) 10–11
- (B) 1011
- (C) 109
- (D) 10–9
67. What is the value of 10 + 20 + 30?
- (A) 1
- (B) 2
- (C) 3
- (D) 0
66. Which of the following is equal to (4 + 5 + 6)0?
- (A) 40 + 50 + 60
- (B) 40 + 50
- (C) 40
- (D) 50 + 60
65. Which of the following is equal to 50 × 250 × 1250?
- (A) (50)6
- (B) (5)6
- (C) (25)6
- (D) (56)0
64. Square of −(5/4) is
- (A) −5/4
- (B) −25/16
- (C) 25/16
- (D) 5/4
63. Cube of (−2/3) is
- (A) −2/3
- (B) −8/27
- (C) 8/27
- (D) 2/3
62. Which of the following is equal to 1?
- (A) 20 + 30 + 40
- (B) 20 × 30 × 40
- (C) (30 – 20) × 40
- (D) (30 – 20) × (30 +20)
61. Which of the following is not true?
- (A) 32 > 23
- (B) 43 = 26
- (C) 33 = 9
- (D) 25 > 52
60. [(–3)2]3 is equal to
- (A) (–3)8
- (B) 36
- (C) –36
- (D) (–3)23
59. Which power of 8 is equal to 26?
- (A) 3
- (B) 2
- (C) 1
- (D) 4
58. The value of the expression (2–3)2 × (3–2)3 is equal to
- (A) 6–6
- (B) –6–6
- (C) –66
- (D) 66
57. Simplified of the expression (–4)4 × (5/4)4 is
- (A) 54
- (B) 45
- (C) –45
- (D) –54
56. What is the value of x if (–5)x+1 × (5)5 = (5)7?
- (A) 1
- (B) 0
- (C) –1
- (D) –2
55. What is the value of (91 + 11) × (51 – 41)?
- (A) 10
- (B) 9
- (C) 5
- (D) 4
54. Which among the following is true?
- (A) (52) × 3 = (52)3
- (B) (52) × 3 > (52)3
- (C) (52) × 3 < (52)3
- (D) None of these
53. Which of the following is the correct representation of (–4m)3?
- (A) (–4)3 × (m)3
- (B) 43 × m3
- (C) (–4)3 × m
- (D) 43 × m
52. What is the value of x if (–5)2x × (5)5 = (5)7?
- (A) 0
- (B) 1
- (C) –2
- (D) –1
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