Question

Let A = {1, 3, 4, 6, 9} and B = {2, 4, 5, 8, 10}. Let R be a relation defined on A × B such that R = {($(a_1, b_1),(a_2, b_2)$) : $a_1 ≤ b_2$ and $b_1 ≤ a_2$}. Then the number of elements in the set R is

• A. 180
• B. 26
• C. 160
• D. 52

Answer 1

Answer: (C)

160

Answer 2

The Correct Option is(C):160