PSLE Answer the following.
- What is the first common multiple of 6 and 10?
- List all the common factors of 36 and 66. Give your answers in numbers in ascending order. (Eg $(n1), $(n2), 6)
(a)
Multiples of 6: 6, 12, 18, 24, 30
Multiples of 10: 10, 20, 30
First common multiple: 30
(b)
Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36
Factors of 66: 1, 2, 3, 6, 11, 22, 33, 66
Common factors of 36 and 66: 1, 2, 3, 6
Answer(s): (a) 30; (b) 1, 2, 3, 6