A target is to be destroyed in a bombing exercise and there is a 
chance that a bomb will hit the target. Assuming that two direct hits are required to destroy the target completely, the minimum number of bombs to be dropped in order that the probability of destroying the target is not less than 
, is
Text Solution
Verified by ExpertsC
Let probability of hit the target 
or 
Hence, probability to not hit the target 
or 
Now, let ' 
' is the minimum number of bombs that are dropped, then according to question probability of destroying the target 
(given)
, (here, 
represents the number of bombs dropped)
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