Teaching DSSSB PGT Mock Test 2025 Mathematics Relations and Functions

Let x ϵ {2, 3, 4} and y ϵ {4, 6, 9, 10}. If A be the set of all order pairs (x, y) such that x is a factor of y. Then, how many elements does the set A contain.

1
12
2
10
3
7
4
6
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