engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Engineering Mathematics Set Theory & Algebra
Let x ∈ {2, 3, 4} and y ∈ {4, 6, 9, 10}. Let A be the set of all order pairs (x, y) such that x is a factor of y. How many elements does the set A contain?
1
12
2
10
3
7
4
6