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Question

A bag contains 100 identical marble stones numbered from 1 to 100. What is the probability of drawing a marble having a number divisible by both 4 and 5?


A

1/25

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B

2/25

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C

2/20

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D

2/40

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Solution

The correct option is D

2/40


Numbers divisible by 4 and 5 both = 20, 40, 60, 80, 100.

Hence P = Favourable outcomesTotal outcomes = 5100= 120

= 120


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