Let A = {1,2,3,4} and B = {1,4,9,16}. Then the number of many-one functions f : A→B such that 1∈f(A)

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22nd Jan Shift 2, JEE MAIN 2025 Function
Application of number of one-one function
Let A = {1,2,3,4} and B = {1,4,9,16}. Then the number of many-one functions f : A→B such that 1∈f(A) is equal to :
A) 127 B) 151 C) 163 D) 139 [ Answer – 151 ]
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