Questions
The total number of injective mappings from a set with m elements to a set with n elements for is
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a
m!n!(m−n)!
b
m!(m−n)!
c
nm
d
zero
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Correct option is D
If A and B are two finite sets, and f:A→B is an injective mapping, then n(A)≤n(B)As m > n, there does not exist any mapping from set with n elements.Similar Questions
If then equal to
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