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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
2. = 14, is :
3. 180
4. 120 (3) 480 (4) 240

Correct answer: 120 (3) 480 (4) 240

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