Skyler buys a bag of cookies that contains 9 chocolate chip cookies, 5 peanut butter cookies, 9 sugar cookies and 7 oatmeal raisin cookies. What is the probability that Skyler randomly selects an oatmeal raisin cookie from the bag, eats it, then randomly selects another oatmeal raisin cookie?

  .

Step-by-step explanation:

Given ,The bag contains :

9 chocolate chip cookies, 5 peanut butter cookies, 9 sugar cookies and 7 oatmeal raisin cookies.

Total cookies = 9+5+9+7=30

Now , the number of ways to choose any two cookies ( one after another) :

The number of way to choose two oatmeal raisins ( one after another) :

Now , the probability that Skyler randomly selects an oatmeal raisin cookie from the bag, eats it, then randomly selects another oatmeal raisin cookie will be :

Hence, the required probability is .

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5