Question

Which is the smallest number?

O A. 3.2 x 10-9
O B. 2.9 x 103
O C. 7.5x 1046
O D. 4.5 x 101​

Answer 1

A

Explanation:

Because if you do 3.2*10= 32

then you subtract 9 32-9= 23

And when you multiply the other, it is already bigger that 23.

Please don't report me. Because I am not sure if you are doing exponent or not. Exponent is 10^3, like that.

Answer 2

A is the answer.

Explanation:

3.2 x 10-9 = 23.

All the other answers are more than 23.