Question

Suppose a jar contains 14 red marbles and 31 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red. Answer should be in fractional form.

Answer 1

P = 91/990

Explanation:

first red marble:
`(14)/(45)`

second red marble:
`(13)/(44)`

The probability

`P=((14)/(45))((13)/(44) )=((14)(13))/((45)(44)) =(182)/(1980) =(91)/(990)`

Hope this helps