Evaluate the number of ways between two town from the word problem.
There are five roads from town A to town B, three roads from town B to town C, and two roads from town A to town C that avoid town B. All the roads are two - way streets.
a. How many ways are there to go from A to C by way of B?
b. How many ways are there to go from A to C?
In how many ways can we get from A to C and back?
d. In how many ways can we get from A to C and back if B is passed through at least once?
A)How many license plate numbers are there consisting of two letters followed by four digits?