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Home Aptitude Problems on H.C.F and L.C.M See What Others Are Saying!
  • Question
  • 30 pineapple trees, 45 orange tree and 60 mango trees have to be planted in rows such that each row contains the same number of trees of one variety only. What is minimum number number of row in which the trees may be planted?


  • Options
  • A. 10
  • B. 15
  • C. 25
  • D. 9

  • Correct Answer


  • Explanation

    Minimum number of rows = Maximum number of trees in each row
    = HCF of 30,45 and 60 = 15
    ? Number of rows = (30 + 45 + 60)/15 = 9


  • More questions

    • 1. 
      10 men can make a wall in 8 days. How many men required to complete the same work in half days?

    • Options
    • A. 80
    • B. 100
    • C. 120
    • D. 160
    • Discuss
    • 2. 
      A and B separately can complete a work in 6 days and 3 days respectively. If they work together, then in how many days will they complete the work?

    • Options
    • A. 4 days
    • B. 3 days
    • C. 2 days
    • D. 5 days
    • Discuss
    • 3. 
      (5568 ÷ 87) 1/3 + (72 x 2) 1/2 = (?) 1/2

    • Options
    • A. 256
    • B. 4
    • C. ?2
    • D. 16
    • Discuss
    • 4. 
      ( .803 x .647 + .803 x .353 ) =?

    • Options
    • A. .803
    • B. 1
    • C. .45
    • D. 1.450
    • Discuss
    • 5. 
      If 6 years are subtracted from the present age of Randheer and the remainder is divided by 18 than the present age of his grandson Anup is obtained. If Anup is 2 years younger to mahesh whose age 5 years, then what's the age of Randheer?

    • Options
    • A. 96 years
    • B. 84 years
    • C. 48 years
    • D. 60 years
    • Discuss
    • 6. 
      In a family, the average age of father and mother is 35 yr. The average age of the father, mother and their only son is 27 yr. What is the age of the son?

    • Options
    • A. 12 yr
    • B. 11 yr
    • C. 10.5 yr
    • D. 10 yr
    • Discuss
    • 7. 15, 31, 63, 127, 255, (....)

    • Options
    • A. 513
    • B. 511
    • C. 517
    • D. 523
    • Discuss
    • 8. 
      356 x 936 - 356 x 836 =?

    • Options
    • A. 35600
    • B. 34500
    • C. 49630
    • D. 93600
    • Discuss
    • 9. 
      In a right angled ? ABC, Right angled at A, AD ? BC. Then :

    • Options
    • A. AD2 = BD × CD
    • B. AD2 = AB × AC
    • C. AD2 = BD × AB
    • D. AD2 = CD × AC
    • Discuss
    • 10. 
      By how much is 30% of 80 greater than 4/5 th of 25?

    • Options
    • A. 2
    • B. 4
    • C. 10
    • D. 15
    • Discuss


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