There are 2 positive integers x and y. What is the probability that x+y is odd?
Choose the correct answer.
A) 1 / 4
B) 1 / 2
C) 1 / 3
D) 1 / 5
E) 1 / 9

Rationale: explanation : the addition of two integer results in an odd number only if any one of the integers is an odd number . the probability of an odd among the two integer is 1 / 2 . hence , the required probability is 1 / 2 . answer : b
Answer: B