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?

The greatest possible 4 digit number has to start with a 5, then a 4, then a 2, ....5421

check my thinking.

even number so last digit would be 2

5412+900= 6312

:)

To find the greatest possible 4-digit even number using the digits 1, 4, 2, and 5, we need to arrange these digits in descending order. Therefore, the largest 4-digit even number that can be formed is 5421.

Now, you mentioned that you are 900 more than this number. To find your number, we can add 900 to 5421:

5421 + 900 = 6321

So, the number you are referring to is 6321.