SOLUTION: Find a four-digit number that satisfies the following: The digits are all different, the sum of the four digits is 7, each digit is larger than the one to its right, and the ones d

Question 921099: Find a four-digit number that satisfies the following: The digits are all different, the sum of the four digits is 7, each digit is larger than the one to its right, and the ones digit is zer
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!


_ _ _ 0

The tens digit can't be 2 or larger for even if it were 2,
the smallest the number could be would be 4320, and the
sum of the digits would be 9 not 7,

So the tens digit can only be 1


_ _ 1 0

The first two digits have to have sum = 6, and so the only
two different digits greater than 1 which have sum 6 are 4 and 2.

So the answer is 

4 2 1 0

Edwim

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