What is the shortest length which can be divided into 4 cm, 8 cm or 9 cm portions without any remainder?
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72
Multiples of 8: 8, 16, 24, 32, 40, 48, 56, 64, 72
Multiples of 9: 9, 18, 27, 36, 45, 54, 63, 72
Shortest length that can be divided
= Lowest common multiple of 4 cm, 8 cm and 9 cm
= 72 cm
Answer(s): 72 cm