# 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?

1. PsyDAG

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 *(5-1)/(10-1) * 3/8 = ?

(c) 5/10 * 4/9 * 3/8 * 2/7 = ?

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