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Home Aptitude Problems on H.C.F and L.C.M See What Others Are Saying!
  • Question
  • What least number must be subtracted from 1936, so that the remainder when divided by 9, 10, 15 will leave in each case the same remainder 7?


  • Options
  • A. 46
  • B. 53
  • C. 39
  • D. 44

  • Correct Answer
  • 39 

    Explanation

    The L.C.M of 9, 10, 15 = 90
    On dividing 1936 by 90, the remainder = 46
    But a part of this remainder = 7
    Hence, the two numbers = 46 - 7 = 39.


  • More questions

    • 1. 
      The average age of 5 member of a committee is the same is it was 3 years ago ,because an old member has been replaced by a new member . the difference between the age of old and new member is?

    • Options
    • A. 2 years
    • B. 4 years
    • C. 8 years
    • D. 15 years
    • Discuss
    • 2. 
      The average age of 11 players of a cricket is decreased by two month when two of them aged 17 years and 20 years are replaced by two reserves . the average of the reserves is?

    • Options
    • A. 17 years 1 month
    • B. 17 years 7 month
    • C. 17 years 11 months
    • D. 18 years 3 months
    • Discuss
    • 3. 
      The average of A and B is 20 years. If C were to replace A, the average would be 19 and if C were to replace B, the Average would be 21. What are the ages of A, B and C?

    • Options
    • A. 22, 18, 20
    • B. 18, 22, 20
    • C. 20, 22, 18
    • D. 18, 20, 22
    • Discuss
    • 4. 
      The average of four consecutive numbers A, B, C, and D is 49.5. What is the product of B and D?

    • Options
    • A. 2499
    • B. 2352
    • C. 2450
    • D. 2550
    • Discuss
    • 5. 
      A cricketer had a mean score of 60 runs in 10 innings. Find out how many runs are to be score in the eleventh innings to raise the mean score to 62?

    • Options
    • A. 80
    • B. 81
    • C. 83
    • D. 82
    • Discuss
    • 6. 
      If 47a + 47b = 5452, what is the average of a and b?

    • Options
    • A. 116
    • B. 23.5
    • C. 96
    • D. 58
    • Discuss
    • 7. 
      The average salary per head of all workers of an institution is ? 60. The average salary per head of 12 officers is ? 400. The average salary per head of the rest is ? 56. Then, the total number of workers in the institutions?

    • Options
    • A. 1030
    • B. 1032
    • C. 1062
    • D. 1060
    • Discuss
    • 8. 
      The average weight of a class of 15 boys and 10 girls is 38.4 kg. If the average weight of the boys is 40 kg, then what is the average weight of the girls?

    • Options
    • A. 36.5 kg
    • B. 35 kg
    • C. 36 kg
    • D. 35.6 kg
    • Discuss
    • 9. 
      A car travels a certain distance from town A to town B at the speed of 42 km/h and from town B to town A at a speed of 48 km/h. What is the average speed of the car?

    • Options
    • A. 45 km/h
    • B. 46 km/h
    • C. 44 km/h
    • D. Cannot be determind
    • Discuss
    • 10. 
      The average of four positive integers is 73.5. The highest integer is 108 and the lowest integer is 29, the difference between the remaining two integers is 15. Which of the following is the smaller of the remaining two integers?

    • Options
    • A. 80
    • B. 86
    • C. 73
    • D. Cannot be determind
    • Discuss


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