# Laws of Exponents quiz

## Law of Exponents Multiple Choice Questions:

Question: (32)2 x (32)4 / (27)4 ?
(a) 1
(b) 2
(c) 3
(d) 4

Ans. (a)

Question: 2525 is divided by 24, the remainder is
(a) 23
(b) 22
(c) 1
(d) 2

Ans. (c)

Question: The unit’s digit in the product of (2467)153 x (341)72 x (225)721 is
(a) 1
(b) 3
(c) 5
(d) 7

Ans. (c)

Question: If a3 b = ab3 c = 180 and a, b, and c are positive integers, the value of c is
(a) 10
(b) 15
(c) 25

Ans. (d)

Question: If 2x–1 + 2x+1 = 1280, then the value of x is
(a) 7
(b) 8
(c) 9
(d) 10

Ans. (c)

Question: (243)0.12 x (243)0.08 equals
(a) 3
(b) 9
(c) 12
(d) 27

Ans. (a)

Related: lines and angles quiz

Question: A boy was asked to write the value of 25 x 92. He wrote it as 2592. The difference between the obtained and the actual value is
(a) 21 x 92
(b) 22 x 93
(c) 23 x 94
(d) Zero

Ans. (d)

Question: 81/3 x 161/4 x 2–2 = ?
(a) 1
(b) 2
(c) 3
(d) 4

Ans. (a)

Question: (22)3 x (23)2 / 26?
(a) 14
(b) 32
(c) 43
(d) 64

Ans. (d)

Question: If 1.125 x 10k = 0.001125, the value of k is
(a) –4
(b) –3
(c) –2
(d) –1

Ans. (b)

Question: (4)0.5 x (0.5)4 is equal to
(a) 1
(b) 4
(c) 1/8
(d) 1/32

Ans. (c)

Question: The units digit in (2469)153 will be
(a) 1
(b) 3
(c) 7
(d) 9

Ans. (d)

Related: Problems on Euclidean Geometry

Question: If 5a = 3125, find the value of 5a–3
(a) 15
(b) 25
(c) 35
(d) 45

Ans. (b)

Question: If m and n are whole numbers such that mn = 121, find the value of (m – 1)n+1
(a) 550
(b) 200
(c) 1000
(d) 400

Ans. (c)