SOLUTION: The telephone company is adding two new exchanges to its service area. The seven-digit telephone numbers for these new exchanges must begin with either a 5 or a 6. How many numbers
Algebra ->
Permutations
-> SOLUTION: The telephone company is adding two new exchanges to its service area. The seven-digit telephone numbers for these new exchanges must begin with either a 5 or a 6. How many numbers
Log On
Question 1050949: The telephone company is adding two new exchanges to its service area. The seven-digit telephone numbers for these new exchanges must begin with either a 5 or a 6. How many numbers are available to the telephone company for the new exchanges? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! choices for 1st digit
The remaining digits have through available
The total number of exchanges are:
200.000
