maths

There are 3 groups of coloured balls.group A consist 2 types white
balls.3 types red balls.group B contains 3 types blue balls & 1 type
white ball.& group C contain 1type red ball & 1 type blue ball.balls
should be picked up one after the other from the group A,B,C in the
same order when these 3 groups are mixed and prepare a set of group
with each group has three balls.

A={w1,w2,R1,R2,R3}
B= {B1, B2, B3,W3}
C= {R4, B4}

1.how many groups will have 2 white balls & 1 red balls?
2.how many groups will have 3 white balls?
3.how many groups having 2 white balls?

How can I solve the problem? Please explain it & post the detailed
messege with definition step by step.
bye

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