SAT Math Question of the Day

Math Category: Exponents Level 1:

Q: What is 5-2?

  1. -25
  2. 1/25
  3. 1/10
  4. 1/7
  5. 10

UNANSWERED.

The correct answer is B.

A: The answer is 1/25. When you see a negative exponent like x-a, this is the same as 1/xa.
So 5-2 = 1/52 = 1/25.