Question
Find the number of many-one function between two sets $A=\{1,2,3\}$ and $B=\{4,5,6\}$ such that $f(1) \neq 4$
Step 1
Since there are 3 elements in set A and 3 elements in set B, the total number of functions is $3^3 = 27$. Show more…
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Let a function $f: A \rightarrow B$, where $A=\{1,2,3\}$ and $B=\{4,5,6\}$ such that $f(1) \neq 4$. Then find the number of one-one function between $A$ to $B$.
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