If the LCM Of two numbers 21 and 30 is 210 what is their HCF
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Answered by
12
Factors of 21=1,3,7,21
Factors of 30=1,2,3,5,6,10,15,30
Common factors =3and1
HCF=3*1=3
Factors of 30=1,2,3,5,6,10,15,30
Common factors =3and1
HCF=3*1=3
Answered by
5
Answer:
3 | 21,30
| 7 ,10
3 is the HCF
HCF is 3 because it is on the left hand side.
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