鐘打4下,要3秒,咁鐘打7下,要幾多秒呢?, K+ ^0 v" U% t3 d$ r. o5 P2 b
5.39.217.76! I1 N# ~% o; e+ M, O
6 d0 {6 U* J1 a! M/ @5.39.217.76鐘打4下,要3秒,咁鐘打7下,要幾多秒呢?^^
6 X1 S) J, |6 \* d4 a8 y" U
4 x5 s- i0 k2 u答左回覆先好看答案呀^_^,唔係冇引咖啦- -v
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ans: 6 |