: K% f- y( B% |1 v% I$ }1 S11次 . g5 w }/ W+ L( ] , X& i3 s E [2 zmake mistake2 p9 n, Z. i" g& ^0 p4 R! R
the answer should be 3x9+4=31, that mean 10 times
12 times 7 S4 ^: w1 ^" G g % G( S/ p6 J( T0 t, O& o# }公仔箱論壇each time 4 person but 1 need to back to pick up the other 35.39.217.76. w+ h9 o' O8 J6 ~6 U" I* |
return x 10 = 30 people5.39.217.76( P* Y; _9 a+ f6 F3 z6 d0 L- u
1 time return5.39.217.76) P& t$ `: k' o j3 Q; \& c5 G2 {# r
2 person on last time 0 t# p/ {1 B$ s! ]公仔箱論壇total : 12 times