1.

If f:NrarrZ defined as f(n)={{:((n-1)/(2),":"," if n is odd"),((-n)/(2),":", " if n is even"):} and g:NrarrN defined as g(n)=n-(-1)^(n), then fog is (where, N is the set of natural numbers and Z is the set of integers)

Answer»

ONE - one and onto
one - one and into
many - one and onto
many - one and into

Answer :A


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