Question

Three numbers are in the ratio 1:2:3 and their HCF is 6, the numbers are

(a) 4,8,12
(b) 5,10,15
(c) 6,12,18
(d) 10,20,30

Answer 1

(c) 6, 12, 18
Three numbers are 1× HCF, 2 × HCF, and 3 × HCF, i.e. 1 × 6 = 6, 2 × 6 = 12, and 3 × 6 = 18.
Thus, the numbers are 6, 12, 18.