# data management

posted by
**jane** on
.

1) show that

a) 2(2n-1 C n-1) = (2n Cn)

b) n(2n C n) = (n+1)(2n C n+1)

posted by
**jane** on
.

1) show that

a) 2(2n-1 C n-1) = (2n Cn)

b) n(2n C n) = (n+1)(2n C n+1)