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प्रश्न
A game of numbers has cards marked with 11, 12, 13, ....., 40. A card is drawn at random. Find the probability that the number on the card drawn is divisible by 7.
बेरीज
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उत्तर
Total number of outcomes = 30
The numbers from 11 to 40 that are divisible by 7 are 14, 21, 28 and 35.
So the number of possible outcomes
The probability that the number on the card drawn is divisible by 7
= `"Number of possible outcomes"/"Total number of outcomes"`
= `4/30`
= `2/15`
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