`""^(10)C_(1)+""^(10)C_(3)+""^(10)C_(5)+""^(10)C_(7)+""^(10)C_(9)` का मान है-

Find the sum ""^(10)C_(1) +^(10)C_(3) +^(10)C_(5)+^(10)C_(7)+^(10)C_(9) .

Find the sum ^10C_(1)+^(10)C_(3)+^(10)C_(5)+^(10)C_(7)+^(10)C_(9)

If |(""^(9)C_(4),""^(9)C_(5),""^(10)C_r),(""^(10)C_(6),""^(10)C_(7),""^(11)C_(r+2)),(""^(11)C_(8),""^(11)C_(9),""^(12)C_(r+4))|=0 , then the value of r is equal to a)3 b)4 c)5 d)6

Prove that ""^(10)C_(3)+""^(10)C_(6)=""^(11)C_(4)