Question 14 Answer and Explanation _ACT December 2010 Form 69A Math Section

14. The decimal representation of 3. 9 x 10^-93 is:

F. a decimal point, followed by 92 zeros, then the digits 3 and 9.

G. a decimal point, followed by 93 zeros, then the digits 3 and 9.

H. a negative sign, followed by the digits 3 and 9, then 92 zeros, then a decimal point.

J. a negative sign, followed by the digits 3 and 9, then 93 zeros, then a decimal point.

K. a negative sign, followed by the digits 3 and 9, then 94 zeros, then a decimal point.

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

First, a negative number on the exponent indicates that the whole number is less than one and greater than zero, thus excluding HJK. Ninety-three means ninety-two zeros after the decimal point, so F is correct. Choose F.