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JEE Advanced Mathematics question

MathematicsProbabilityJEE Advanced

All the spades are taken out from a pack of cards. From these cards, cards are drawn one by one without replacement till the ace of spades comes. The probability that the ace comes in the 4th draw is

Answer: (A)

Solution

The first three draws must miss the ace and the fourth must hit it:

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Question ID VK-109781