Pens are sold in packets of 15 pens per packet the pens are

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Pens are sold in packets of 15 pens per packet. The pens are of different colour and 20% are red.

a) Show the the probabilty of a randomly chosen packet of pens containing 3 or more red ones is 0.602

b) James buys 6 packets of pen. Find the probabiltiy that atleast 5 or the packets contain 3 or more red pens.

Reference no: EM13622636

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