Form the greatest possible 5-digit number using the clues:

All five digits are different

None of the five digits are 1

The digit in the ten thousands place is greater than 7

The sum of all five digits is 18

The greatest digit is equal to the sum of the other four digits.

Guest Feb 23, 2020

#3**+1 **

All five digits are different

The digit in the ten thousands place is greater than 7 so it is 8 or 9

The sum of all five digits is 18, others add to 10 or 9

The greatest digit is equal to the sum of the other four digits. So the the biggest is 9 and the others add to 9

None of the five digits are 1 0+2+3+4=9

so the digits from biggest to smallest are 9,4,3,2,0

The biggest possible number is 94 320 just like guest said.

Melody Feb 23, 2020