A bucket contains $2$ red, $3$ white and $4$ blue balls. If you randomly pick(without putting the balls back) $2$ balls, how great is the chance that the picked balls have different colors?
I really don't know how to get started on this.
A bucket contains $2$ red, $3$ white and $4$ blue balls. If you randomly pick(without putting the balls back) $2$ balls, how great is the chance that the picked balls have different colors?
I really don't know how to get started on this.
Hint: compute the probability you got two balls of the same colour for each possible colour.
D stands for different colour. Then you have the possibilities RD,WD and BD. (B=blue et cetera).