Mathematics · Number System
A school has less than 2000 students. If the students are divided into groups of 9, 12, or 20, exactly three students are always left out, but when divided into groups of 21, no student is left out. Find the maximum number of groups that can be formed with 10 students in a group.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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Correct answer
90
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