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

माना A = {1, 3, 7, 9, 11} और B = {2, 4, 5, 7, 8, 10, 12}  है, तो एकैकी  फलन f : A → B की कुल संख्या, जहाँ f (1) + f(3) = 14, है:

1
180
2
120
3
480
4
240
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