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each packet of blades sold contains a coupon which is equally likely to bear the letters A,B or C.if m packets are purchased, what is the probability that the coupons can not be used to spell BAC?

each packet of blades sold contains a coupon which is equally likely to bear the letters A,B or C.if m packets are purchased, what is the probability that the coupons can not be used to spell BAC?

Grade:12

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