一群學(xué)生,每人從12首歌的列表中選出2首最喜歡的,如果每首歌被選擇了4次,學(xué)生應(yīng)該有多少人?
12X4=48（次） 每人選2首,共計48/2=24（人）
In a survey of students,each student selected from a list of 12 songs the 2 songs that the student liked best.If each so
In a survey of students,each student selected from a list of 12 songs the 2 songs that the student liked best.If each song was selected 4 times,how many students were surveyed?
英語人氣：631 ℃時間：2020-04-07 17:44:23
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