1.

On an average 1 in 100 razor blades manufactured by a firm are defective.If blades are supplied in packets of 5 each, find the probability that a packet has atleast one defective blade. If 1000 packets are tested, in how many packets would you expect defective blades.

Answer»


ANSWER :`1-(0.99)^(5),1000[1-(0.99)^(5)]`


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