SAT Math Question of the Day

Math Category: Exponents Level 1:

Q: What is 2-2?

  1. -4
  2. -2
  3. -1
  4. 1/4
  5. 1/2

UNANSWERED.

The correct answer is D.

A: The answer is 1/4. When you see a negative exponent like x-a, this is the same as 1/xa.
So 2-2 = 1/22 = 1/4.