The value of (8x10^7)(8x10^8) is closest to which of the following?

The value of (8x10^7)(8x10^8) is closest to which of the following?

Quiz

Answer/Solution

10^17

Steps/Work

multiplying these we get,
64 x 10^7 x 10^8
= 6.4 x 10^16
which is closer to 10^17
Answer: A