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[" Let "S={1,2,3,......,9}." For "k=1,2,...

[" Let "S={1,2,3,......,9}." For "k=1,2,......5," let "N_(k)" be the "],[" number of subsets of "S," each containing five elements "],[" out of which exactly "k" are odd.Then "],[N_(1)+N_(2)+N_(3)+N_(4)+N_(5)=," (2017Adv.) "],[[" (a) "210," (b) "252," (c) "126," (d) "125]]

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