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Nine interest groups participate in eight groups of extracurricular activities every day.
A school has 9 interest groups. The number of people in each group is as follows:

Group 1 2 3 4 5 6 7 8 9

Number 579101131417 23

One morning, eight groups went to Chinese and math classes, among which the number of people in Chinese classes was six times that in math classes, and the other group went out for activities. Which group is this?

A: The fifth group.

5/7 = 0 ... 5 7 ... 0 9 ... 210 ... 31... 413.614.017.3 23 ...

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