Question 1044275: 5. Phone numbers in France are 8 digits long, plus a 2 digit area code. They are in the format
AB-CDDD-XXXX
A can be any number 2-9.
B can be any number 1-9.
C can be any number 3-9
D can be any number 0-9.
X can be any number 0-9.
How many numbers can the French have?
How many numbers can the French have?
Answer by richard1234(7193)   (Show Source):
You can put this solution on YOUR website! 8 choices for A (*not* 7!)
9 choices for B
7 choices for C
10 choices for D
10 choices for X
Once A, B, C, D, X are picked, the number is determined. Also, every choice of (A,B,C,D,X) gives a unique number.
# of possible numbers = 8*9*7*10*10
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