Question

Three numbers are in the ratio 1 : 2 : 3 and their H.C.F. is 6. The numbers are ______.

• A. 4, 8, 12
• B. 5, 10, 15
• C. 10, 20, 30
• D. 6, 12, 18

Answer 1

The correct option is D 6, 12, 18

The three numbers are $1\times$HCF, $2\times$HCF, and $3\times$ HCF.
That is $1\times 6=6$, $2\times 6=12$, $3\times 6=18$

Hence, the numbers are 6, 12 and 18.

So, option 'd' is correct.