Quantitative Aptitude :: HCF & LCM Problems And Answers


HCF & LCM Formulaes

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11. Which of the following integers has the most number of divisors?

A. 176 B. 182
C. 99 D. 101
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12. Find the L.C.M of 2/15, 3/10, 6/5

A. 6/5 B. 2/3
C. 7/5 D. 8/5
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13. What is the HCF of 2/3, 4/9 and 6/5

A. 7/45 B. 2/45
C. 4/15 D. 8/45
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14. What is the smallest number which when diminished by 8, is divisible by 9, 6, 12 and 18?

A. 50 B. 45
C. 44 D. 60
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15. The HCF of two numbers is 42 and the other two factors of their LCM are 11 and 12. What is the largest number.

A. 462 B. 450
C. 480 D. 504
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16. What is the least number which when divided by 6, 9, 12 and 18 leaves remainder 4 in each care?

A. 30 B. 40
C. 36 D. 56
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17. Five bells ring together and ring at intervals of 2, 6, 8, 12 and 15 seconds respectively. How many times will they ring together in 60 minutes?

A. 34 B. 33
C. 32 D. 31
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18. What is the greatest number which divides 29, 32, 38 and leaves same remainder in each case?

A. 2 B. 3
C. 4 D. 5
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19. Reduce 4128/4386 to its lowest terms

A. 14/13 B. 13/17
C. 16/17 D. 13/18
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20. 504 can be expressed as a product of primes as

A. 2 × 2 × 3 × 3 × 7 × 7  B. 2 × 3 × 3 × 3 × 7 × 7
C. 2 × 2 × 2 × 3 × 3 × 7 D. 2 × 3 × 3 × 3 × 3 × 7
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Related Topics

Simple Interest
Clock
Problems on Trains
Profit and Loss
Decimal Fractions
Number System




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