Question

Find the product of 21 and (6.3 · 10-4).

0.1323 · 10-1
1.323 · 10-3
1.323 · 10-2
1.323 · 102

Answer 1

`1.323 * 10^(-2)`

Explanation:

We need to find the product of 21 and (6.3 · 10-4). so let's multiply them.

`(21)(6.3 * 10^(-4))`

`=(21)(6.3) * 10^(-4)`

`=132.3 * 10^(-4)`

`=1.323 * 10^(2) * 10^(-4)`

`=1.323 * 10^(2) * 10^(-4)`

`=1.323 * 10^(2-4)`

`=1.323 * 10^(-2)`

Hence correct answewr is 2nd choice.