Out of first 26 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 options
A) 1/2
B) 16/19
C) 4/5
D) 21/26
E) 3/5
n(S) = 26   n(Even no) = 13 = n(E)   n(Prime no) = 9 = n(P)   P(EᴜP) = 13/26 + 9/26 - 1/26 = 21/26   ANSWER:21/26
<result>D</result>
Out of first 26 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is -.