fraction of population

ner month

$($a$)$ Do more insects die in the first month of their life or the twelfth month of their life?

$($b$)$ What fraction of the insects live no more than $9$ months?

Enter the exact answer.

The fraction of insects that live no more than $9$ months is

$($c$)$ What fraction of the insects live more than $3$ months?

Enter the exact answer.

The fraction of insects that live more than $3$ months is