Question

The age of a diamond found while digging a hole is predicted as follows:
12,000,000,000 $\times$ 24,000,000

Select the correct age of the diamond.

• A. 2.88E16
• B. 2.88E17
• C. 1.88E16
• D. 1.88E17

Answer 1

The correct option is B 2.88E17

Given: 12,000,000,000 $\times$ 24,000,000

Convert them into scientific notation,
$=1.2\times {10}^{10}\times 2.4\times {10}^7$
$=1.2\times 2.4\times {10}^{10+7}$
$=2.88\times {10}^{17}$
$=2.88\text{E}17$