in a bag there are 40 pens, 30 are blue pens and 10 are red pens. in another bag there are 30 pens , 25 are blue pens and 5 are red pens. One pen is drawn from each bag. in how many ways the two pens can be taken? what is the probability that both are blue pens?
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probability of blue pens=750/1200
=75/120=25/40
=5/8
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