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25. The value of (21C1- 10C1) +(21C2- 10...

25. The value of `(21_C_1- 10_C_1) +(21_C_2- 10_C_2)+ (21_C_3- 10_C_3) +...............+(21_C_10- 10_C_10)`

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The value of (21_C_1-10_C_1)+(21_C2-10_C_2)+ (21_C_3-10_C_3) + (21_C_4-10_C_4) + ...........(21_C_10- 10_C_10) is:

The value of (21_C_1-10_C_1)+(21_C2-10_C_2)+ (21_C_3-10_C_3) + (21_C_4-10_C_4) + ...........(21_C_10- 10_C_10) is:

The value of (21_C_1-10_C_1)+(21_C2-10_C_2)+ (21_C_3-10_C_3) + (21_C_4-10_C_4) + ...........(21_C_10- 10_C_10) is:

The value of (^21C_1-^10C_1)+(^21C_2-^10C_2)+....+(^21C_(10)-^10C_(10)) is

The value of (.^(21)C_(1) - .^(10)C_(1)) + (.^(21)C_(2) - .^(10)C_(2)) + (.^(21)C_(3) - .^(10)C_(3)) + (.^(21)C_(4) - .^(10)C_(4)) + "…." + (.^(21)C_(10) - .^(10)C_(10)) is

The value of (.^(21)C_(1) - .^(10)C_(1)) + (.^(21)C_(2) - .^(10)C_(2)) + (.^(21)C_(3) - .^(10)C_(3)) + (.^(21)C_(4) - .^(10)C_(4)) + … + (.^(21)C_(10) - .^(10)C_(10)) is

The value of (.^(21)C_(1) - .^(10)C_(1)) + (.^(21)C_(2) - .^(10)C_(2)) + (.^(21)C_(3) - .^(10)C_(3)) + (.^(21)C_(4) - .^(10)C_(4)) + … + (.^(21)C_(10) - .^(10)C_(10)) is

The value of (.^(21)C_(1) - .^(10)C_(1)) + (.^(21)C_(2) - .^(10)C_(2)) + (.^(21)C_(3) - .^(10)C_(3)) + (.^(21)C_(4) - .^(10)C_(4)) + … + (.^(21)C_(10) - .^(10)C_(10)) is

The value of (.^(21)C_(1) - .^(10)C_(1)) + (.^(21)C_(2) - .^(10)C_(2)) + (.^(21)C_(3) - .^(10)C_(3)) + (.^(21)C_(4) - .^(10)C_(4)) + … + (.^(21)C_(10) - .^(10)C_(10)) is (A) 2^(21) - 2^(11) (B) 2^(21) - 2^(10) (C) 2^(20) - 2^(9) (D) 2^(20) - 2^(10)