<prompt> Kielelezo kilicho hapa chini kinawakilisha kielelezo chenye jumla ya pembetatu 120 na pointi n zilizo na lebo ya wima kwenye msingi mlalo. Thamani ya n ni nini?asyukubwa250,400;jozi P 3,4;r halisi .05;chora0,0--P; chora1,0--P; chora3,0--P; chora4.5,0--P; chora7,0--P; chora7,0--8,0; jazamduara83r,0,r; jazamduara87r,0,r; kuchora 815r,0-- 915r,0; chora 915r,0--P; chora 1115r,0--P; jazamduara811r,0,r; chora0,0--7,0; chora 915r,0--1115r,0;leboP,P,N; leboA_1,0,0,S; leboA_2,1,0,S; leboA_3,3,0,S; leboA_4,4.5,0,S; leboA_5,7,0,S; leboA_n-1,915r,0,S; leboA_n,1115r,0,S;asy  <response>: Kwa kuwa pointi zozote mbili A_i,A_j hufafanua pembetatu moja haswa, kuna binomn2 fracnn-12 iwezekanavyo pembetatu. Kutatua fracnn-12 120, tunapata kwamba n 16. 