C1 11+C3 11+...+C11 11=?

C(1,11)+C(3,11)+C(5,11)+C(7,11)+C(9,11)+C(11,11)
=C(10,11)+C(8,11)+C(6,11)+C(4,11)+C(2,11)+C(0,11)
=0.5*(C(0,11)+C(1,11)+...+C(11,11))
=0.5*(1+1)^11
=2^10
=1024