The value of 1/4^-2 is
(a) 16
(b) 8
(c) 1/16
(d) 1/8

Solution:

The Correct answer is (a)

Using the law of exponents we have a^m = 1/a^-m

1/4^-2 = 4² = 16

✦ Try This: The value of 1/5 - 3 is (a) -15, (b) 125, (c) 1/125, (d) - 1/125

The Correct answer is (b)

Using the law of exponents we have am = 1/a-m

1/5^-3 = 5³ = 125

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 12

NCERT Exemplar Class 8 Maths Chapter 8 Problem 4

The value of 1/4^-2 is (a) 16, (b) 8, (c) 1/16, (d) 1/8

Summary:

The value of 1/4^-2 is 16

☛ Related Questions:

• The value of 35 ÷ 3-6 is (a) 35, (b) 3-6, (c) 311, (d) 3-11
• The value of (2/5)-2 is (a) 4/5, (b) 4/25, (c) 25/4, (d) 5/2
• The reciprocal of (2/5)-1 is (a) 2/5, (b) 5/2, (c) -5/2, (d) -2/5