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

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> 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      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (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?
------------
The Number: 425/---/----
---------------------------
Since 8 cannot be used fill in the blanks with 0-7,9 or 9 choices
Ans: 9^7 = 4,782,969 telephone numbers
=============================================
Cheers,
Stan H.