Tuliskan aturan pembentukan barisan setiap bilangan berikut dan tentukan dua angka berikutnya ! 7,9,11,13

Bab Deret Angka
Matematika SMP Kelas VII

1] 5, 12, 19, 26, → n + 7

26 + 7 = 33
33 + 7 = 40

5, 12, 19, 26, || 33, 40

2] 1, 4, 9, 16, → n²
5² = 25
6² = 36

1, 4, 9, 16, || 25, 36

3] 2, 6, 12, 20, ...
......+4..+6..+8..+10...+12... → m +2

20 + 10 = 30
30 + 12 = 42

2, 6, 12, 20, || 30, 42

4] 7, 9, 11, 13 → n + 2
13 + 2 = 15
15 + 2 = 17

7, 9, 11, 13, || 15, 17