Out of first 30 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.  Choose the most appropriate option
A) 1/2  B) 16/19  C) 4/5  D) 24/30  E) 3/5
n(S) = 30   n(Even no) = 15 = n(E)   n(Prime no) = 10 = n(P)   P(EᴜP) = 15/30 + 10/30 - 1/30 = 24/30   ANSWER:24/30
<result>D</result>
Out of first 30 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.