What is the shortest length which can be divided into 3 cm, 5 cm or 9 cm portions without any remainder?
Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45
Multiples of 9: 9, 18, 27, 36, 45
Shortest length that can be divided
= Lowest common multiple of 3 cm, 5 cm and 9 cm
= 45 cm
Answer(s): 45 cm