Question
A is trying to break a bulb by throwing balls at it. If
he hits the bulb 4 times in every 11 throws and bulb breaks 4 times out of 20 hits, then find the probability of A breaking the bulb.Solution
Probability of A hitting the bulb = 4/11 Probability of the bulb being broke on getting hit = 4/20 = 1/5 Probability of A breaking the bulb = (4/11) × (1/5) = 4/55
The lowest common denominator of a test is otherwise called:
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