Answers to Math Exercises: The Least Common Multiple and Greatest Common Divisor 
GCD (12, 24, 48, 192, 288) = 12
The shortest stretch of the rail track that can be replaced without cutting the rails is of 120 m.
A cuboid can be formed by 720 cubes with the edge of length 4 cm.
Children and teachers can be divided at the most into 6 small groups.
The chocolate should have at least 35 squares.
There should be at least 60 students in the class.
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