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時針部分：
(1+2+3+⋯+12) + (1+2+3+4) = 88次
分針部分：
0:30, 1:30, ⋯, 15:30 ⇒ 16次
88+16 = 104
Mathematics
Junior High
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求解，謝謝
客廳牆上有一咕咕鐘,時針正指1點時響聲,正
指2點時響2聲, 正指12點時響12聲,又分
針每次正指6時也響聲,則凌晨零時20分到下
午4時20分,咕咕鐘響了幾聲? (9分) 104
解:
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