SOLUTION: Adam is allowed to choose his own telephone number. The first three digits are set 425-. He can suggest any combination of numerals for the last four digits. Unfortunately, while i

Question 183333: Adam is allowed to choose his own telephone number. The first three digits are set 425-. He can suggest any combination of numerals for the last four digits. Unfortunately, while in first grade, Adam had great deal of trouble writing the number 8 and has hated the number ever since. How many possible telephone numbers can he construct avoiding the number 8?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Adam is allowed to choose his own telephone number. The first three digits are set 425-. He can suggest any combination of numerals for the last four digits. Unfortunately, while in first grade, Adam had great deal of trouble writing the number 8 and has hated the number ever since. How many possible telephone numbers can he construct avoiding the number 8?
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The Number: 425/---/----
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Since 8 cannot be used fill in the blanks with 0-7,9 or 9 choices
Ans: 9^7 = 4,782,969 telephone numbers
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Cheers,
Stan H.
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