How many different 3 digit numbers are there if. I digit can be repeated? The digits 0 through 9 can be used, but 0 cannot be in
1 answer:
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Answer:
1x
We do n-1 so the first term is 1x and the pwoer of zero makes the number 1 so the pattern is still correct because 1x1=1
Double check the equation is true
Second term is 1x
1x5=5
If you don't want the equation you just multiply 5 each time
Hope this helps
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