Which of the following is greater than 4.3 × 10^9

A. 2.1 × 109
B. 3.2 ×109
C. 5.3 × 109
D. 7.4 ×108
I think it's either C or D, but I can only choose one.

5 answers

well, D is 0.74 x 10^9
so I guess C, eh?
D is 7.4 x 10^8
A. 2.1 × 10^9
B. 3.2 ×10^9
C. 5.3 × 10^9
D. 7.4 ×10^8
The ratio of the correct number to 4.3*10^9 is greater than 1:
n/4.3*10^9 > 1. So the answer is C.
which of the following is greater than 4.3 x 10^9