Mathematics, 23.08.2019 05:10, harleyy6134
How many different six-digit decimal numbers can be formed where the first digit is a 1 or the last digit is a 5?
Answers: 2
is the number of options, 
, and 
the number of times you have to place a digit, 
.
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How many different six-digit decimal numbers can be formed where the first digit is a 1 or the last...
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