In 10^3(exponent), 10 is the base, and 3 is the exponent. That means 10 will appear as a factor 3 times: 10 · 10 · 10. 10^3(exponent)​​ = 1000.
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In 2^7, how many times will 2 appear as a factor?

A
2

B
14

C
7

D
9