Advanced Math practice question

Answer: 4

Divide by 5: 2ˣ = 16 = 2⁴, so x = 4.

Common wrong answers

If you answered 5

5 is the coefficient, not the exponent.

If you answered 6

6 comes from 2ˣ = 64 (dividing 80 by something other than 5, or a slip); 80/5 = 16.

If you answered 16

16 is 2ˣ, one step short; the exponent that gives 16 is 4.

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