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If the set A contains 5 elements and set B contains 6 elements, then the number of one-one and onto mapping from A to B is
(a) 720 (b) 120 (c) 0 (d) None of these
Answers (1)
Let, the number of elements in A and B set are m and n respectively. Therefore, one-one and onto mapping
from A to B is n! when m = n
and, 0 if m ≠ n
It is given that, m = 5 and n = 6.
As,5 ≠ 6 So, from A to B mapping = 0
View full answer
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