SOLUTION: How many numbers less than 9000 contain only 6, 7 or 8 as digits?
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Question 1102395: How many numbers less than 9000 contain only 6, 7 or 8 as digits?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
All positive integer numbers of 1, 2, 3, or 4 digits made with only 6, 7, and 8 are less than 9000.
That includes 1-digit numbers: 6, 7, and 8,
2-digit numbers: 66, 67, 68, 76,, 77, 78, .... ,
3-digit numbers, and
4-digit numbers.
The total is
.
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