1.

The probability that a bulb produced by a factory will fuse after 150 days is 0.05. Find the probability that out of 5 such bulbs (i) none  (ii) not more than one (iii) more than one (iv) at least one will fuse after 150 days of use.

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Answer :(i) `(0.95)^(5)` (II) `(45)/(512)` (iii) `(243)/(1024)` (IV) `1-(0.95)^(5)`


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