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Question

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


A
110
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B
910
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C
225
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D
2325
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Solution

The correct option is B $$\dfrac{1}{10}$$
Card number which is a square in a pack of 100 cards numbered 1 to 100 is: $$1, 4, 9, 16, 25, 36, 49, 64, 81, 100$$
 $$=10$$ cases
Probability for this case will be$$=\dfrac{10}{100}=\dfrac{1}{10}$$

Maths

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