Out of first 50 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.  Choose the correct choice from the following:
A) 1/2  B) 16/19  C) 4/5  D) 61/50  E) 3/5
n(S) = 50   n(Even no) = 25 = n(E)   n(Prime no) = 15 = n(P)   P(EᴜP) = 25/50 + 15/50 - 1/50 = 61/50   ANSWER:61/50
<result>D</result>
Out of first 50 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.