The sum of the series `20C_0 -20C_1 + 20C_2 -20C_3 + ... + 20C_10`, is

The sum of the series S=20C_(0)-20C_(1)+20C_(2)-20C_(3)+...+20C_(10) is

The sum of the series ""^20C_0+""^20C_1+""^20C_2+...+""^20C_9 is

The sum of the series 20C_(0)-^(20)C_(1)+^(20)C_(2)-^(20)C_(3)+...-...+^(20)C_(10) is:

The sum of the series .^(20)C_(0)-.^(20)C_(1)+ .^(20)C_(2)-.^(20)C_(3)+...-.+ .^(20)C_(10) is -

The sum of series ^^(20)C0-^^(20)C1+^^(20)C2-^^(20)C3++^^(20)C 10 is 1/2 ^^(20)C 10 b. 0 c. ^^(20)C 10 d. -^^(20)C 10

The sum of the series C(20,0)-C(20,1)+C(20,2)-C(20,3)+...-...+C(20,10) is

The sum of the series 2.""^(20)C_0+5.""^(20)C_1+8.""^(20)C_2+11.""^(20)C_(3)+.........62.^(20)C_20 is equal