(""^(21)C(1)-""^(10)C(1))+(""^(21)C(2)-"...

`(""^(21)C_(1)-""^(10)C_(1))+(""^(21)C_(2)-""^(10)C_(2))+(""^(21)C_(4)-""^(10)C_(4))+.....+(""^(21)C_(10)-""^(10)C_(10))` का मान है

`2^(21)-2^(11)`

`2^(21)-2^(10)`

`2^(20) - 2^(9)`

`2^(20) - 2^(10)`

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