Induction Proof : Strings of Digits - If n >= 1, the number of strings using the digits 0,1, and 2 with no two consecutive places holding the same digit, is 3x2^n-1. For example, there are 12 such strings of length three: 010, 012, 020, ...
Induction by Recursion : Even-Parity Strings - Define recursively the set of even-parity strings, by induction on the length of the string. Hint: It helps to define two concepts simultaneously, both the even-parity and odd-parity strings.
Bit Strings - (a) How many bit strings of length 6 are there? Explain fully.
(b) How many bit strings of length 6 are there which begin with a 0 and end with a 0? Explain fully.
(c) How many bit strings of ...