Kuantitatif deret angka 4, 3, 7, 5, 4, 8, 6, 5, .... Mohon dibantu.

polanya ada 3 tahapan
1. kurang 1
2. tambah 4
3. kurang 2

sehingga,
4, 3, 7,----> 4 - 1 = 3, 3 + 4 = 7, 7 - 2 = 5, 
5, 4, 8, ---> 5 - 1 = 4, 4 + 4 = 8, 8 - 2 = 6,
6, ...., ....--> 6 - 1 = 5, 5 + 4 = 9, 9 - 2 = 7.
Sehingga selanjutnya 
4, 3, 7, 5, 4, 8, 6, 5, 9, 7, dst.

Semoga bisa membantu...