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If `fa n dg` are two functions defined on `N ,` such that `f(n)-{2n-1ifni se v e n2n+2ifni sod d` and `g(n)=f(n)+f(n+1)dot` Then range of `g` is `{m in N : m=` multiple of 4`}` `{` set of even natural numbers`}` `{m in N : m=4k+3,k` is a natural number `{m in N : m=` multiple of 3 or multiple of 4`}`

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