Question:Three numbers are in the ratio 1:2:3 and their H.C.F. is 12. The numbers are: 

A 12,24,36 
B 10,20,30 
C 5,10,15 
D 4,8,12 

+ Answer
A 

+ Explanation
solution:
Let the required numbers be x, 2x and 3x.
Then, their H.C.F. =x. So, x=12.
`:.` The number are 12,24 and 36.

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Md. Habib Ullah

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