The probability of a man hitting a target is 1 10 . The least number of shots required, so that the probability of his hitting the target at least once is greater than 1 4 , is....

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TestHub · Accepted Answer

p = 1 10 , q = 9 10 P (not hitting in n trials) = 9 10 n ∴ P (at least one hit) = 1 − 9 10 n > 1 4 ⇒ 9 10 n < 3 4 0 .9 n < 0 . 75 If n = 3 ⇒ 0 . 729 < 0 . 75 which is true.

Mathematics - Probability Question with Solution | TestHub

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