Page 69 - Riyanto.Hitung Cepat
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Jika A = bilangan ganjil ≥ 3
Maka, C = (A + 1)/2
2
B = C -1
Contoh:
Jika A = 3, C = 5, maka B = 4
A = 5, C = 13, maka B = 12
Hitung B, jika A dan C diketahui, sebagai berikut.
A = 7, C = 25, maka B = ...
A = 9, C = 41, maka B = ...
A = 11, C = 61, maka B = ...
A = 13, C = 85, maka B = ...
A = 15, C = 113, maka B = ...
A = 17, C = 145, maka B = ....
A = 19, C = 181, maka B = ....
A = 21, C = 221, maka B = ...
Kunci jawaban:
B = C -1
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Menghitung Cepat dan Mudah
