Aptitude  HCF and LCM  Practice Q&A

1. The G.C.D. of 1.08, 0.36 and 0.9 is:

0.03 0.9 0.18 0.108

2. The product of two numbers is 2028 and their H.C.F. is 13. The number of such pairs is:

1 2 3 4

3. The H.C.F. of two numbers is 5 and their L.C.M. is 150. If one of the numbers is 25, then the other is:

30 28 24 20

4. What is the greatest possible length which can be used to measure exactly the lengths 8 m, 4 m 20 cm and 12 m 20 cm?

10 cm 30 cm 25 cm 20 cm

5. The least number, which when divided by 12, 15, 20 and 54 leaves in each case a remainder of 8 is:

504 536 544 548

6. The greatest possible length which can be used to measure exactly the lengths 7 m, 3 m 85 cm, 12 m 95 cm is:

15 cm 25 cm 35 cm 42 cm

7. What is the greatest number which on dividing 1223 and 2351 leaves remainders 90 and 85 respectively?

1133 127 42 1100

 

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