Dengan mengikat 9 manik-manik yang berbeda warna bersama-sama, berapa banyak gelang yang dapat dibuat?

<p>jawabannya =½ (9 -1) !</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=½ (8) !</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = &nbsp;½ x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 4 x 7 x 30 x 24&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 28 x 30 x 24 &nbsp;&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 20.160 gelang&nbsp;</p><p>&nbsp;</p><p>mungkin begini kk, maaf ya kalo salah semoga terbantu :)&nbsp;</p><p>XD &nbsp; &nbsp; &nbsp;&nbsp;</p>