Question

1. Find the HCF of the following by listing
the common factors.
a) 12,15
b) 20,30
d) 45,63
c)32,40
2. Find the LCM of the following by listing
the multiples.
a) 6 and 10 b) 9 and 15
c)16 and 24
d) 30, and 45​

Answer 1

Answer:

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Answer 2

HCF

1. common factors olf 12,15is 1 and 3
2. common factors of 20,30 is 2 and 5
3. common factors of 45,63 is 9
4. common factors of 32,40 is 8

LCM

1. LCM of 6and 10 is 30
2. LCM of 9 and 15 is 45
3. LCM of 16and 24 is 48
4. LCM of 30 and 45 is 90