Suppose a jar contains 8 red marbles and 25 blue marbles. If you reach in the jar and pull out 2 marbles at random, find the probability that both are red.

Step-by-step explanation:

Total marbles in the jar =  8+25 = 33

Using combinations, the number of ways of choosing two marbles out of 33=    (total outcomes)

Similarly, the number of ways of choosing two red marbles =

(favorable outcomes)

Required probability =

hence, required probability =

a - base

b - exponent

so,