Posted by **dillon** on Monday, April 16, 2007 at 11:25am.

of a set of 10 cards, 3 have red circles, 4 have yellow triangles, and 3 have green diamonds. you choose one card at random and then replace it. then you choose a second card. what is the probability that both cards have yellow triangles?

Find the probability of obtaining the first card. Since you are replacing the card, that is the same as the probability of obtaining the second card. The probability of

*all* events occurring is obtained by

*multiplying* the probabilities of the individual events.

I hope this helps. Thanks for asking.

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