1, 5, 7, 5, 10, 10, 9, 15, 13, 13, 20, ...., ...., ....
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Jawab:
Pola bilangan:
1, 5, 7, 5, 10, 10, 9, 15, 13, 13, 20, a, b, c (loncat 3 angka kemudian)
1 + 4 = 5
5 + 4 = 9
9 + 4 = 13
13 + 4 = 17
b = 17
1, 5, 7, 5, 10, 10, 9, 15, 13, 13, 20, a, 17, c
5 + 5 = 10
10 + 5 = 15
15 + 5 = 20
20 + 5 = 25
c = 25
1, 5, 7, 5, 10, 10, 9, 15, 13, 13, 20, a, 17, 25
7 + 3 = 10
10 + 3 = 13
13 + 3 = 16
a = 16
Jadi urutan selanjutnya adalah 16, 17, 25
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