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Let {S}={{1},{2},{3}{,}{9}}{{F}}{{or}}{k}={1},{2},{5},{l}{e}{t

Question

Let $S = {1, 2, 3 \overset{,}{¨} 9} \dot{F} or k = 1, 2, 5, l e t N_{k}$ be the number of subsets of S, each containing five elements out of which exactly $k$ are odd. Then $N_{1} + N_{2} + N_{3} + N_{4} + N_{5} = ?$ 210 (b) 252 (c) 125 (d) 126

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Let

S = {1, 2, 3 \overset{,}{¨} 9} \dot{F} or k = 1, 2, 5, l e t 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} = ?

210 (b) 252 (c) 125 (d) 126

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Question Text

Let

S = {1, 2, 3 \overset{,}{¨} 9} \dot{F} or k = 1, 2, 5, l e t 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} = ?

210 (b) 252 (c) 125 (d) 126

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