Let $n(A) = 4$ and $n(B) = 6$. The number of one to one functions from $A$ to $B$ is

Question

Dr. Abubacker · Accepted Answer

(d)
Given, $n(A) = 4$ and $n(B) = 6$
Here, $n(B) > n(A)$
Since, the function $f$ is one-one and onto.
$	herefore$ Required number of ways
${= \ }^{6}P_{4} = \frac{6!}{2!} = 360$

Q. Let $n(A) = 4$ and $n(B) = 6$. The number of one to one functions from $A$ to $B$ is

Explanation

Reviewed by Dr. Abubacker

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