Question

There are 30 socks in a drawer. 60% of the socks are red and the rest are blue. what is the minimum number of socks that must be taken from the drawer without looking in order to be certain that atleast two blue socks have been chosen?

Answer 1

60% of 30 is 18,thus there are 18 red socks and 12 blue socks in the drawer.In order to ensure that 2 blue socks have been chosen at random ,we must take out take out 20 socks from the drawer.