LCM and HCF 1/1

1. Find the LCM of 16, 24, 32
a. 6
b. 12
c. 24
d. 120


2. Find the HCF of 120, 210
a. 6
b. 12
c. 24
d. 120


3.LCM of $\displaystyle\frac{2}{7},\displaystyle\frac{3}{{14}}{\rm{ and }}\displaystyle\frac{5}{3}{\rm{ is}}$
a. 45
b. 35
c. 30
d. 25


4. Find the HCF of $\dfrac{3}{{32}},\;\dfrac{6}{{10}},\;\dfrac{9}{{16}}$
a. 6
b. 12
c. 24
d. 120


5. About the number of pairs which have 16 as their HCF and 136 as their LCM, the conclusion can be
a. only one such pair exists
b. only two such pairs exist
c. many such pairs exist
d. no such pair exists


6. HCF of three numbers is 12. If they are in the ratio 1:2:3, then the numbers are
a. 12,24,36
b. 10,20,30
c. 5,10,15
d. 4,8,12


7. The HCF of two numbers is 16 and their LCM is 160. If one of the numbers is 32, then the other number is
a. 48
b. 80
c. 96
d. 112


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