Question

There are 3 strawberry ice creams, 4 chocolate ice creams, and 7 vanilla ice creams on a tray. barbara selects 2 ice creams at random without replacement. what is the probability that she selects 2 chocolate ice creams?

Answer 1

There are 14 ice cream all in all. Choosing two out of the 14 ice cream can be determine by the equation,
14C2 = 91
Then, there are 4 chocolate ice creams. Choosing two out of the 4 ice cream id determined through the equation,
4C2 = 6
Thus, the probability that she selects 2 chocolate ice cream is equal to 6/91.