Question

A jar has 6 marbles, 1 blue, 1 white, 1 green, 1 yellow, 1 red, 1 black. If 5 marbles are removed at random, what is the probability that the green marble was removed?

Answer 1

The desired probability is `5/6`.

Explanation:

The probability that the green marble is removed in first instant is `1/6`

Hence, the probability that green marble is there among remaining `5` marbles and not removed is `1-1/6=5/6`.

This is equivalent to taking `5` marbles at random and the green marble being among them.

Hence desired probability is `5/6`