# The probability that a bulb produced by a factory will fuse after 150 days if used is 0.50. What is the probability that out of 5 such bulbs none will fuse after 150 days of use

Question : The probability that a bulb produced by a factory will fuse after 150 days if used is 0.50. What is the probability that out of 5 such bulbs none will fuse after 150 days of use

(A) $1-\left( \dfrac{19}{20}\right) ^{5}$

(B) $\left( \dfrac{19}{20}\right) ^{2}$

(C) $\left( \dfrac{3}{4}\right) ^{5}$

(D) 90$\left( \dfrac{1}{4}\right) ^{5}$

Solution :

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