Question

Set A contains 3 elements and set B contains 2 elements the no.of onto functions from A onto B is​

Answer 1

Answer:

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Answer 2

Question:Set A contains 3 elements and set B contains 2 elements the no.of onto functions from A onto B is

Answer:

To define the injective functions from set A to set B, we can map the first element of set A to any of the 4 elements of set B.

Then the second element can not be mapped to the same element of set A, hence, there are 3 choices in set B for the second element of set A.

Similarly there are 2 choices in set B for the third element of set A.

Hence the total number of injective functions are 4×3×2=24

Explanation:

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