Question 819335: BellSouth Telephone Company wants to know how many telephone numbers are possible for each code. If the digits 1 and 0 cannot be used in the first two positions, how many seven-digits phone numbers are possible for each code?
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! BellSouth Telephone Company wants to know how many telephone numbers are possible for each code. If the digits 1 and 0 cannot be used in the first two positions, how many seven-digits phone numbers are possible for each code?
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Ans: 9^2*10^5 = 81*100000 = 8,100,000
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Cheers,
Stan H.
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