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Kelas 7 MatematikaBab Pola Bilangan
Pada pembilang
-1, 2, -3, 4, -5...
Pola = (-1)^n . n
Pada penyebut
2, 3, 4, 5, ....
Pola = n + 1
Rumus suku ke n = ((-1)^n . n)/(n + 1)