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Q.

The number of non bijective functions from set A consisting 5 elements to an other set consisting 5 elements

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a

120

b

3125

c

3005

d

3245

answer is C.

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Detailed Solution

No. of non-bijections = (No. of functions) - (No. of bijections)

=55−⌊5=3125−120=3005

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