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what is the probability of the destruction of the bridge if only 5 bombs are dropped? (a)62.32% (b)81.25% (c)45.23% (d)31.32%

what is the probability of the destruction of the bridge if only 5 bombs are dropped?
(a)62.32%
(b)81.25%
(c)45.23%
(d)31.32%

Grade:12th pass

1 Answers

Rushil
35 Points
5 years ago
for 2 bombs-
22=4 possible cases..-(H H),(H M),(M H),(M M)
2 Hits(H) req. for destruction...hence 1/4..

similarly, for 3 bombs-
2^3=8 possible cases..i.e-i.e-(H H H),(H H M),(H M H),(M H H),(H M M),(M H M),(M M H),(M M M)..All cases with more than 2 hits are favourable...hence 4/8..

similarly for other cases...for more number of bombs combination can be done to get the values quickly...

P.S-probability for hit or miss are the 1/2 so no need considering them

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