What is the shortest length which can be divided into 3 cm, 9 cm or 10 cm portions without any remainder?
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90
Multiples of 9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90
Multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90
Shortest length that can be divided
= Lowest common multiple of 3 cm, 9 cm and 10 cm
= 90 cm
Answer(s): 90 cm