A card is drawn at random from a pack of 100 cards numbered 1 to 100. The probability drawing a number which is a square is?

1/5
2/5
1/10
None of these

Correct Answer: 1/10

Explanation:

Total ways = 100
Squares of following no's lie between 1 and 100,
1², 2², 3² , 4², 5² , 6², 7², 8² , 9² , 10²
(Which are 10 in numbers.)
So. Required probability = 10/100 = 1/10

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