Teaching HTET PGT Level 3 - 2024 Mock Test Mathematics Relations and Functions

Let A = {1, 3, 7, 9, 11} and B = {2, 4, 5, 7, 8, 10, 12}. Then the total number of one-one maps f : A → B, such that f (1) + f(3) = 14, is :

1

180

2

120

3

480

4

240

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