4. A class has 25 students. The class teacher has been asked to make groups of m students
each and go to museum taking one group at a time. Find the size of group for which the
teacher goes the maximum number of times to the museum.
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• the size of the group is 5
• there is no other way to divide 25 into
groups of equal size.
Therefore, there will be 5 groups of 5
students each so that the teacher goes
maximum number of times to the
museum is 5.
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