Final answer:
To find the probability of selecting 2 oatmeal cookies, use the combination formula to calculate the number of ways to select 2 oatmeal cookies and the total number of possible cookie selections. The probability is 1/46.
Step-by-step explanation:
To find the probability that Riya randomly selects 2 oatmeal cookies from the bag, we need to calculate the number of ways she can select 2 oatmeal cookies divided by the total number of possible cookie selections.
There are 4 oatmeal cookies in the bag, so the number of ways she can select 2 oatmeal cookies is given by the combination formula: C(4,2) = 4! / (2!(4-2)!) = 6.
The total number of possible cookie selections is given by the combination formula: C(24,2) = 24! / (2!(24-2)!) = 276.
Therefore, the probability of selecting 2 oatmeal cookies from the bag is 6/276 = 1/46.