ABCDE is the number. E=C+4 (ones digit is 4 more than hundreds digit). A=E-5. B=D=0. So A=C-1.
A |
B |
C |
D |
E |
1 |
0 |
2 |
0 |
6 |
2 |
0 |
3 |
0 |
7 |
3 |
0 |
4 |
0 |
8 |
4 |
0 |
5 |
0 |
9 |
E is half of what? Is it 12, 14, 16 or 18? This would give one of the numbers 10206, 20307, 30408, 40509.
If C is half of E the answer is 30408. If E is half the combined digits AC (ten thousands and hundreds digits) then the answer is 10206.