Question

In Fermi’s method for estimating large numbers, he uses a power of 10 to estimate the upper and lower bound. Which answer choice contains powers of 10?

A. 1, 2, 3, 4, …

B. 10, 20, 30, 40, …

C. 10, 100, 1,000, 10,000, …

D. 5, 10, 15, 20, …

Answer 1

C. 10, 100, 1,000, 10,000, …

Explanation:

In Fermi’s method for estimating large numbers, he uses a power of 10 to estimate the upper and lower bound. Therefore, 10, 100, 1,000, 10,000, … is the answer choice that contains powers of 10. For instance if it were 10^2, you would add 2 zeros, making it 100.

Answer 2

C. 10, 100, 1,000, 10,000, …

Explanation:

Powers of 10 are 10^x, where x is an integer. Any number that starts with 1 and has zeros after it is a power of 10.