Originally posted by pyliu at 2006-1-11 16:42:/ Q# C. [( O& ~% \ 問題:已知媽媽比兒子大21歲。六年後,媽媽的歲數是兒子的五倍。問爸爸現在在哪裏?
Originally posted by Tokyo2040 at 2006-1-11 09:54 AM: 7 c' @# c, n0 i; G$ \爸爸喺到happy緊