model 5 lcm & hcf vs ratios Practice Questions Answers Test with Solutions & More Shortcuts

Question : 11

The LCM and the HCF of the numbers 28 and 42 are in the ratio :

a) 3 : 2

b) 6 : 1

c) 2 : 3

d) 7 : 2

Question : 12 [SSC CAPFs SI 2013]

The ratio of two numbers is 3 : 4 and their HCF is 5. Their LCM is :

a) 15

b) 10

c) 60

d) 12

Question : 13 [SSC CGL 2015]

The H.C.F. and L.C.M. of two numbers are 21 and 84 respectively. If the ratio the two numbers is 1 : 4, then the larger of the two numbers is

a) 48

b) 12

c) 108

d) 84

Question : 14 [SSC CGL 2014]

Three numbers are in the ratio 1 : 2 : 3 and their HCF is 12. The numbers are

a) 4, 8, 12

b) 12, 24, 36

c) 5, 10, 15

d) 10, 20, 30

Question : 15

The ratio of two numbers is 4 : 5 and their H.C.F. is 8. Then their L.C.M. is

a) 150

b) 130

c) 140

d) 160