Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.
A.1/2
B.16/19
C.4/5
D.17/20
Answer:D
Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.
A.1/2 B.16/19 C.4/5 D.17/20