Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
| Ratio
One Answer Below
Anyone can contribute an answer, even non-tutors.
I am trying this sec one question
Date Posted: 5 years ago
Views: 465
The answer cannot be 6. The LCM of 6 and 6 is 6!
24 = 2x2x2x3
Since 24 is a multiple of n, n MUST contain at the very least, the other 2 factors ie 2x2 since 6 = 2x3.
The answer cannot be 4 becos lcm of 4 and 6 is 12.
The answer is 8 ie 2x2x2.
The LCM of 8 n 6 is 24.
Note that n cannot be 12 ie 2x2x3 becos the lcm of 6 and 12 is 12.
24 = 2x2x2x3
Since 24 is a multiple of n, n MUST contain at the very least, the other 2 factors ie 2x2 since 6 = 2x3.
The answer cannot be 4 becos lcm of 4 and 6 is 12.
The answer is 8 ie 2x2x2.
The LCM of 8 n 6 is 24.
Note that n cannot be 12 ie 2x2x3 becos the lcm of 6 and 12 is 12.
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
1) Derive prime factors (anything that can be divided by 1 and itself)
2) common prime factors between the two numbers > multiply them
2) common prime factors between the two numbers > multiply them
Date Posted:
5 years ago
The answer is 8. The LCM of 6 and 8 is 24. The number 24 must contain all the factors of 6 and 8 (note that common factors of 6 and 8 are to be included only once).
Eg. 6 = 2x3
8= 2x2x2
Therefore, LCM = 2x2x2x3 = 24
Eg. 6 = 2x3
8= 2x2x2
Therefore, LCM = 2x2x2x3 = 24
Oh I see where I went wrong, sorry ‘:(
No problem. We all make mistakes. Juz need to learn n move on. :))
360 Tutoring Program