z 2 x y
z + 2 + x + 7 = 13
z is even or z = 2 w
2w + 2 + x + 7 = 13
2 w + x = 4
x must also be even or 0
x = 0 then w = 1
if x = 2 then w = 1
so
if x = 0 then w = 2
2227
4207
the sum of my digits is 13, my hundredths place is 3 less than 5, my ones place is 4 more than 3, my thousands place is even, what 4-digit numbers can I be
1 answer