Xiao Ming has a wall clock at home, which rings every hour. At six o'clock in the morning, the bell rang, and Xiaoming and Xiaowen counted carefully. The clock struck six and ended in five seconds.

Xiao Ming asked Xiao Wen:

"The clock strikes 6 times and knocks out in 5 seconds; The clock struck 12. How many seconds does it take? "

Xiaowen is thinking, "Knock 6 times and take 5 seconds; Knock 12, of course 10 seconds. "

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