Question

What is the probability and i only need answers for 11 through 15

Answer 1

For question number 11, given the following:

A bag contains:

4 green marbles

8 yellow marbles

So, the total of marbles = 4 + 8 = 12

The probability of picking a green marble the first time = 4/12 = 1/3

Then, return it again

So, the number of marble still = 12

The probability of picking a green marble second time = 4/12 = 1/3

So, the probability of both marble is green =

`(1)/(3)*(1)/(3)=(1)/(9)`

So, the answer will be 1/9