1.
Difference between 9 and 5
→ 4
2.
Difference between 8 and 3
→ 5
3.
Difference between 12 and 7
→ 5
4.
Difference between 15 and 9
→ 6
5.
Difference between 10 and 4
→ 6
6.
Difference between 20 and 13
→ 7
7.
Difference between 16 and 8
→ 8
8.
Difference between 18 and 11
→ 7
