math
posted by tasha .
a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

There are 25 chips. 7/25 of them are red and 6/25 are blue.
The probability of what you described is
(7/25)*(6/25) = 42/625
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