Question

$0.000008$ _______ $0.000016$

• A. is half of
• B. is double of
• C. is one-fourth of
• D. is one-third of

Answer 1

The correct option is A is half of

$0\cdot 000008=8\times {10}^{-6}$

$0\cdot 000016=1\cdot 6\times {10}^{-5}$

Now
$\frac{8\times {10}^{-6}}{1\cdot 6\times {10}^{-5}}=\frac{8}{1\cdot 6}\times {10}^{-1}=5\times {10}^{-1}=0\cdot 5$

$\therefore 8\times {10}^{-6}$ is half of $1\cdot 6\times {10}^{-5}$