SOLUTION: A typical Social Security number is 555-47-5593. How many Social Security numbers are possible if the first two digits cannot be 0?

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Question 480306: A typical Social Security number is 555-47-5593. How many Social Security numbers are possible if the first two digits cannot be 0?
Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
It's 9 digits
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For the 1st 2, it's 1 of 9, the other 7 are 1 of 10
--> 9*9*10E7
= 81%2A10%5E7
= 810,000,000

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A typical Social Security number is 555-47-5593. How many Social Security numbers are possible if the first two digits cannot be 0?
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1st: 9 ways
2nd: 9 ways
Other 10^7
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Ans: 810,000,000
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Cheers,
Stan H.