The greatest possible 4 digit number has to start with a 5, then a 4, then a 2, ....5421
check my thinking.
i am 900 more than the greatest possible 4 digit even number that can be mad using the digits 1,4,2,5. what number am I?
3 answers
even number so last digit would be 2
5412+900= 6312
:)
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