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A function is defined by mapping f : A → B such that A contains m elements and B contains n elements and 1≤n≤m then numb

Posted: Thu Jul 14, 2022 8:57 am
by answerhappygod
a) r=1∑r=n nCr (-1)n-r rm
b) r=1∑r=n nCr (-1)n-r rn
c) r=1∑r=n nCr (-1)m-r rn
d) None of the mentioned