# How many half life would it take for a sample of corbon-14 to be reduced to 1/32 of its original mass?

$\frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} = \frac{1}{{2}^{5}} = \frac{1}{32}$