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A function f from the set of natural num...

A function f from the set of natural numbers to integers defined by : `f(n)={:[((n-1)/(2)",""when n is odd"),(-(n)/(2)",""when n is even"):}` is :

A

onto but not one-one

B

one-one and onto both

C

neither one-one nor onto

D

one-one but not onto

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Verified by Experts

The correct Answer is:
B
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