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NAGEEN PRAKASHAN-PERMUTATION AND COMBINATION -Exercise F
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Play - If .^(n)C(10) = .^(n)C(15), then evaluate .^(27)C(n).
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Play - If .^(n)C(5) = .^(n)C(7), then find .^(n)P(3)
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Play - If .^(16)C(r) = .^(16)C(r+6), then find .^(5)C(r).
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Play - Determine n if (i) ^2n C2:^n C2=12 :1 (ii) ^2n C3:^n C3=11 :1
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Play - Determine n if (i) ^2n C2:^n C2=12 :1 (ii) ^2n C3:^n C3=11 :1
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Play - Determine n if (i) ^2n C2:^n C2=12 :1 (ii) ^2n C3:^n C3=11 :1
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Play - If .^(15)C(r): .^(15)C(r-1) = 1:5, then find r.
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