Out of first 25 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ?	Answers:
A) 4/17  B) 4/7  C) 4/9  D) 4/5  E) 4/3
n(S) = 25   n(Even no) = 12 = n(E)   n(Prime no) = 9 = n(P)   P(EᴜP)   = 12/25 + 9/25 - 1/25   = 20/25 =4/5   Answer:4/5
<result>D</result>
Out of first 25 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ?