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

Question : 1 [SSC CPO S.I. 2003]

The ratio of two numbers is 4 : 5 and their L.C.M. is 120. The numbers are

a) 24, 30

b) 30, 40

c) 40, 32

d) 36, 20

Question : 2

Three numbers are in the ratio 2 : 3 : 4 and their H.C.F. is 12. The L.C.M. of the numbers is

a) 96

b) 144

c) 192

d) 72

Question : 3 [SSC CHSL 2014]

If x : y be the ratio of two whole numbers and z be their HCF, then the LCM of those two numbers is

a) xy z

b) yz

c) xz y

d) xyz

Question : 4 [SSC CGL Prelim 2008]

Two numbers are in the ratio 3 : 4. If their LCM is 240, the smaller of the two number is

a) 60

b) 100

c) 80

d) 50

Question : 5 [SSC MTS 2011]

The LCM of two numbers is 48. The numbers are in the ratio 2 : 3. The sum of the numbers is

a) 40

b) 28

c) 32

d) 64