Question

The probability of a man hitting a target in one fire is 1/5. Find the minimum number of fire; he must follow in order to make his chances of hitting the target more than 3/4.

Answer 1

Probability of hitting the target in one fire p = 1/5.

Then, the probability of hitting the target at least once in n fires is

1− (Probability of not hitting the target)

The least value of n = 7.