Question 1104768
How many ways are there to create a 6 digit pin number where exactly 4 of digits are the same? the numbers 0-9 can be in any place
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0 to 9 for the 4 digits are equal --> 1 of 10 choices.
The remaining 2 are 1 of 10 each.
10*10*10= 1000 PINs
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It is 10800.
I was close.