HCF and LCM

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SSC CGL.... 


Q. 1. L.C.M. of 2/3, 4/9, 5/6 is 
A) 8/27
B) 20/3
C) 10/3
D) 20/27
Q. 2. H.C.F. of 2/3, 4/5 and 6/7 is 
A) 48/105
B) 2/105
C) 1/105
D) 24/105
Q.3. The HCF of two numbers is 16 and their LCM is 160. If one of the number is 32, then the other number is 
A) 48
B) 80
C) 96
D) 112
Q. 4. The least number which when divided by 4, 6, 8, 12 and 16 leaves a remainder of 2 in each case is: 
A) 46
B) 48
C) 50
D) 56
Q. 5. Four bells ring at the intervals of 5, 6, 8 and 9 seconds. All the bells ring simultaneously at same time. They will again ring simultaneously after
A) 6 minutes
B) 12 minutes
C) 18 minutes
D) 24 minutes
Q. 6.The LCM of two numbers is 48. The numbers are in the ratio 2:3. The sum of the numbers is 
A) 28
B) 32
C) 40
D) 64
Q. 7. The H.C.F. and L.C.M. of two numbers are 21 and 84 respectively. If the ratio of two numbers is 1:4, then the larger of the two numbers is 
A) 12
B) 108
C) 48
D) 84
Q. 8. The sum of two numbers is 36 and their H.C.F. is 4. How many pairs of such numbers are possible? 
A) 1
B) 2
C) 3
D) 4



Thank you 


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