Maths
posted by Kamil .
A bag contains 5 black 3 white and 2 red balls.state in the how many can (a) 3 balls be drawn at random (b) 3 black balls be drawn (c) 2black and 2 white balls be drawn?

Maths 
PsyDAG
It would help if you proofread your questions before you posted them. Don't know about a.
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
(b) 5/10 *(51)/(101) * 3/8 = ?
(c) 5/10 * 4/9 * 3/8 * 2/7 = ?
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