SOLUTION: How many 10 digit numbers can be formed using 3 and 7 only?
Algebra.Com
Question 365041: How many 10 digit numbers can be formed using 3 and 7 only?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Each digit is 1 or 2 numbers.
--> 2^10 = 1024
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