There are 4 chocolate chip cookies and 12 oatmeal cookies in a jar. if you reach in and randomly choose 2 cookies without replacing the first, what is the probability that both will be chocolate chip?

12 oatmeal and 4 chocolate chip(12 + 4 = 16)...16 total cookies

probability of first one drawn is choc chip = 4/16 reduces to 1/4
without replacing
probability of second one drawn is choc chip = 3/15 reduces to 1/5

probability of both : 1/4 * 1/5 = 1/20 <==

The 8th term is 512