PSLE Answer the following.
- What is the first common multiple of 4 and 9?
- List all the common factors of 33 and 48. Give your answers in numbers in ascending order. (Eg $(n1), $(n2), 4)
(a)
Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36
Multiples of 9: 9, 18, 27, 36
First common multiple: 36
(b)
Factors of 33: 1, 3, 11, 33
Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Common factors of 33 and 48: 1, 3
Answer(s): (a) 36; (b) 1, 3