Out of first 35 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) 17/35
B) 7/35
C) 37/70
D) 27/35
E) 27/70
n(S) = 35   n(Even no) = 17 = n(E)   n(Prime no) = 11 = n(P)   P(EᴜP)   = 17/35 + 11/35 - 1/35   = 27/35   Answer:27/35
<result>D</result>
Out of first 35 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is ?