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

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answerhappygod
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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

Post 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
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