The value of

Download now India's Best Exam Prepration App Class 8-9-10, JEE & NEET
Video Lectures	Live Sessions
Study Material	Tests
Previous Year Paper	Revision

Video Lectures

Live Sessions

Study Material

Tests

Previous Year Paper

Revision

Question:
The value of (2/5)-2 is:

(a) 4/5

(b) 4/25

(c) 25/4

(d) 5/2

Solution:

Explanation: By the law of exponent we know: a-n = 1/an.

Hence, (2/5)-2 = 1/(2/5)2 = 1/(4/25) = 25/4