What is the minimum number of rulers that can be shared among 3, 6 or 7 children?
To be able to share rulers among 3, 6 or 7 children, the number of rulers must be divisible by 3, 6 and 7.
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42
Multiples of 6: 6, 12, 18, 24, 30, 36, 42
Multiples of 7: 7, 14, 21, 28, 35, 42
Lowest common multiple of 3, 6 and 7: 42
Minimum number of rulers that can be shared among 3, 6 or 7 children: 42
Answer(s): 42
