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LCM & HCF interview questions

30 LCM & HCF questions from the Aptitude bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.

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1. Find the LCM of 48 and 20.

Junior
  1. A.268.80
  2. B.297.60
  3. C.240
  4. D.211.20

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2. Find the LCM of 60 and 54.

Junior
  1. A.669.60
  2. B.604.80
  3. C.475.20
  4. D.540

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3. Find the HCF of 60 and 45.

Junior
  1. A.15
  2. B.16.80
  3. C.18.60
  4. D.13.20

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4. Find the HCF of 24 and 20.

Junior
  1. A.4
  2. B.3
  3. C.5
  4. D.6

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5. Find the LCM of 48 and 45.

Junior
  1. A.720
  2. B.633.60
  3. C.806.40
  4. D.892.80

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6. Find the LCM of 16 and 8.

Junior
  1. A.17.92
  2. B.19.84
  3. C.16
  4. D.14.08

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7. Find the HCF of 18 and 15.

Junior
  1. A.3
  2. B.3.50
  3. C.4
  4. D.2.50

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8. Find the HCF of 16 and 45.

Junior
  1. A.0.50
  2. B.1.50
  3. C.2
  4. D.1

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9. Find the HCF of 48 and 54.

Junior
  1. A.6
  2. B.5
  3. C.8
  4. D.7

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10. Find the LCM of 48 and 8.

Junior
  1. A.48
  2. B.53.76
  3. C.59.52
  4. D.42.24

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11. Find the LCM of 18 and 28.

Junior
  1. A.221.76
  2. B.282.24
  3. C.312.48
  4. D.252

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12. Find the LCM of 40 and 15.

Junior
  1. A.148.80
  2. B.105.60
  3. C.134.40
  4. D.120

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13. Find the LCM of 12 and 8.

Junior
  1. A.26.88
  2. B.24
  3. C.21.12
  4. D.29.76

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14. Find the HCF of 36 and 54.

Junior
  1. A.20.16
  2. B.18
  3. C.22.32
  4. D.15.84

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15. Find the LCM of 40 and 8.

Junior
  1. A.44.80
  2. B.40
  3. C.49.60
  4. D.35.20

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16. Find the LCM of 24 and 15.

Junior
  1. A.148.80
  2. B.120
  3. C.134.40
  4. D.105.60

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17. Find the LCM of 16 and 20.

Junior
  1. A.89.60
  2. B.70.40
  3. C.99.20
  4. D.80

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18. Find the LCM of 40 and 54.

Junior
  1. A.1209.60
  2. B.950.40
  3. C.1080
  4. D.1339.20

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19. Find the HCF of 18 and 45.

Junior
  1. A.7.92
  2. B.10.08
  3. C.9
  4. D.11.16

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20. Find the LCM of 18 and 15.

Junior
  1. A.79.20
  2. B.100.80
  3. C.90
  4. D.111.60

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21. Find the LCM of 12 and 45.

Junior
  1. A.158.40
  2. B.223.20
  3. C.180
  4. D.201.60

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22. Find the LCM of 16 and 15.

Junior
  1. A.297.60
  2. B.268.80
  3. C.240
  4. D.211.20

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23. Find the LCM of 60 and 32.

Junior
  1. A.422.40
  2. B.595.20
  3. C.480
  4. D.537.60

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24. Find the HCF of 48 and 28.

Junior
  1. A.6
  2. B.4
  3. C.3
  4. D.5

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25. Find the HCF of 48 and 8.

Junior
  1. A.8
  2. B.10
  3. C.7
  4. D.9

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26. Find the LCM of 60 and 45.

Junior
  1. A.158.40
  2. B.201.60
  3. C.223.20
  4. D.180

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27. Find the HCF of 18 and 28.

Junior
  1. A.2
  2. B.2.50
  3. C.1.50
  4. D.3

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28. Find the HCF of 12 and 54.

Junior
  1. A.7
  2. B.8
  3. C.5
  4. D.6

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29. Find the HCF of 12 and 15.

Junior
  1. A.3.50
  2. B.4
  3. C.3
  4. D.2.50

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30. Find the HCF of 18 and 20.

Junior
  1. A.1.50
  2. B.3
  3. C.2
  4. D.2.50

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