a number from 1to20 are choosen at random, find the probability of choosing a prime number.
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1/10
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no of prime numbers between 1-20=10
Mandalrajeev:
Let the event of choosing the prime number b e favourable outcome 2, 3, 5, 7, 11, 13, 17, 19 is equals to 8 total number of outcome is equals to 20 the probability of is equals to 8 by 20 is equals to 0.4
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