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There are 100 cards in a bag on which numbers from 1 to 100 are written. A card is taken out from the bag at random.

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There are 100 cards in a bag on which numbers from 1 to 100 are written. A card is taken out from the bag at random. Find the probability that the number on the selected card is divisible by 9 and is a perfect square.

(A) 9/100

(B) 1/25

(C) 7/100

(D) 3/100

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1 Answer

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Best answer

The correct option is: (D) 3/100

Explanation:

Total number of possible outcomes = 100 

Numbers from 1 to 100 which are divisible by 9 and perfect square are 9, 36 and 81. 

Number of favourable outcomes = 3

. ..  Required probability = 3/100

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