• anonymous
We call a number special if every digit in the number either is a 1 or borders a 1. How many 5-digit numbers are special?
  • Stacey Warren - Expert
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  • chestercat
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  • mathstudent55
By bordering a 1, do you mean 0 and 2? If so, you need to find how many different 5-digit numbers you can make with the digits 0, 1, and 2.
  • anonymous
My life will forever be confused if I dont find out the answer.
  • kropot72
The number of permutations of n different things taken r at a time with repetitions is\[n ^{k}\] In this case the number of different 5-digit numbers is \[3^{5}=you\ can\ calculate\]

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