Question
Mathematics Question on Relations and functions
Let A = {1,2,3,4,5} and let B={1,2,3,4}. If the relation R : A -> B is given by (a, b) ∈ R if and only if a+b is even, then n(R) is equal to
A
10
B
16
C
20
D
12
E
6
Answer
10
Explanation
Solution
The correct option is (A) : 10