Counting - 1. how many license plates can be made using three letters followed by the three digits or four letters followed by two digits
2. how many bit strings of length 10 contain either 5 consecutive 0s o ...
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, ...
Grammar Induction - Consider the grammar
1) -> |epsilon
2) -> 0|1|2|3|4|5|6|7|8|9
Use induction to show that the number of strings in L() of length n is equal to 10^ ...
Bit String Lengths - (a) How many bit strings of length 6 are there? Explain.
(b) How many bit strings of length 6 are there which begin with a 0 and end with a 1? Explain.
(c) How many bit strings of length 6 start wit ...