Which of the following has a value of 84?

A. 512

B. 4,096

C. 32

D. 83

Answer is B. 4,096

I encountered this problem before. This is a trick question.

84 is not really the number 84. It is 8 raised to the 4th power.

So 8⁴ is equal to 4,096.

8 x 8 x 8 x 8 = 4,096

8 x 8 = 64

64 x 8 = 512

512 x 8 = 4,096