1. (a) Define the sequence Co, C1, ... by the equations Co= 0 and Co=96/21 +3 for all n > 0. Prove that
Cs2n for all n 2 3.
(b) Prove that any positive integer N is divisible by 11 if and only if the difference between the
sum of odd digits and the sum of even digits is divisible by 11.​

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !