There are 50 cards marked with the numbers 1 to 50. One card is drawn

1.	There are 50 cards marked with the numbers 1 to 50. One card is drawn at random. What is the probability that number on the Card is a prime number? (1) 3 /10 (2) 1 /5 (3) 1 /4 (4) 2 /15
Answer» Correct option is (1) 3 /10 n(S) = 50 E = {2, 3, 5, 7, 11, 13, 17, 19, 23, 2, 31, 37, 41, 43, 47} n(E) = 15 ∴ P(E) = 15/20 = 3/10

There are 50 cards marked with the numbers 1 to 50. One card is drawn at random. What is the probability that number on the Card is a prime number? (1) 3 /10 (2) 1 /5 (3) 1 /4 (4) 2 /15

Answer»

Correct option is (1) 3 /10

n(S) = 50

E = {2, 3, 5, 7, 11, 13, 17, 19, 23, 2, 31, 37, 41, 43, 47}

n(E) = 15

∴ P(E) = 15/20 = 3/10

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There are 50 cards marked with the numbers 1 to 50. One card is drawn at random. What is the probability that number on the Card is a prime number? (1) 3 /10 (2) 1 /5 (3) 1 /4 (4) 2 /15

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