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The value of r(0lerle10) for which ("^...

The value of ` r(0lerle10)` ` for which `(`"^20C_0`).(`"^10C_0`)+(`"^20C_(r-1)`).(`"^10C_1`)....+(`"^20C_0`)(`"^10C_r)` is minimum is

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The value of r(0<=r<=10)f or which(^(20)C_(0)).(^(10)C_(0))+(^(20)C_(r-1))*(1^(10)C_(1))...+(^(20)C_(0))(^(10)C_(r)) is minimum is

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The value of r for which .^(20)C_(r ), .^(20)C_(r - 1) .^(20)C_(1) + .^(20)C_(2) + …… + .^(20)C_(0) .^(20)C_(r ) is maximum, is

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