SOLUTION: How many seven-digit local telephone numbers can be formed if the first three-digits are 169?

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Question 1201243: How many seven-digit local telephone numbers can be formed if the first three-digits are 169?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How many seven-digit local telephone numbers can be formed if the first three-digits are 169?
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If the 1st 3 are fixed, it's not relevant what they are.
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The last 4 are 0 to 9 ---> 10^4 = 10,000.
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PS No local telephone numbers begin with 1.