book

Toko roti “Lezat” =>pakai kombinasi perulangan


Soal :
Toko roti “Lezat” menjual 8 macam roti.  Berapa jumlah cara mengambil 1 lusin roti ? (1 lusin = 12 buah)

 

Jawab:

n = 8 macam roti

r = 1 lusin roti = 12 buah roti

Jumlah cara = C(n+r-1, r) = C(8+12-1, 12) = C(19, 12) = 19C12

19C12 =  50388 cara.

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