JEE Advanced Mathematics question

MathematicsProbabilityJEE Advanced

A man firing at a distant target has 10% chance of hitting the target in one shot. The number of times he must fire at the target to have about 50% chance of hitting the target is

Answer: (C)

Solution

With shots, . Setting gives , so

n==≈6.6.

Checking whole numbers: - :

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Question ID VK-109778