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Bab Pola BilanganMatematika SMP Kelas VII
1] 1, 2, 5, 14, ...
1, 3, 9, ..→ kelipatan 3,
1, 2, 5, 14, 41, 122
1, 3, 9, 27, 81, ...
2] 81, 80, 27, 40, 9, .a.., ...b.
||--------||--------||----------|| → dibagi 3, maka 9 : 3 = 3
↑--------↑--------↑ → dibagi 2, maka 40 : 2 = 20
81, 80, 27, 40, 9, 20, 3,...
3] 1, 3, 4, 9, 9, 27, 16, ...., ....
||-----||-----||--------|| → bilangan kuadrat 1², 2², 3², 4², selanjutnya 5² = 25
↑-----↑------↑→ perkalian 3, maka 27 x 3 = 81
1, 3, 4, 9, 9, 27, 16, 81, 25