The value of C0+3C1+5C2+7C3+....+(2n+1)Cn is equal to :
2n
2n+n.2n-1
2n (n+1)
None of these
C0+3C1+5C2+7C3+.....
=(C0+C1+C2+⋯)+2(C1+2C2+3C3+⋯)
=2n+2.n.2n−1=(n+1)2n
C0−C1+C2−C3+........+(−1)nCn is equal to