Question 17 Answer and Explanation _ACT December 2010 Form 62E Math Section

Question 17 Answer and Explanation _ACT December 2010 Form 62E Math Section

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17. Which of the 3 numbers listed below is the least and which is the greatest?

8.3 × 10³, 2.3 × 10^-5, 1.2 × 10⁴

least greatest

A. 1.2 × 10⁴ 8.3 × 10³

B. 1.2 × 10⁴ 2.3 × 10^-5

C. 2.3 × 10^-5 1.2 × 10⁴

D. 2.3 × 10^-5 8.3 × 10³

E. 8.3 × 10³ 1.2 × 10⁴

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

Compare the index of 10 to judge the size