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Home Aptitude Decimal Fraction Comments

  • Question
  • [ .6 x .6 x .6 x .4 x .4 x .4 + 3 x .6 x .4 x (.6 + .4 )] =?


  • Options
  • A. 21.736
  • B. 2.1736
  • C. .21736
  • D. 1

  • Correct Answer


  • Explanation

    Given expression =(.6)3 + (.4) 3 + 3 x .6 x .4 x (.6 + .4)
    = a3 + b3 + 3ab (a+b)
    = (a+b)3
    = (.6 + .4)3
    = 13
    = 1


  • Decimal Fraction problems


    Search Results


    • 1. 
      The greatest fraction out of 2/5, 5/6, 11/12 and 7/8 is?

    • Options
    • A. 7/8
    • B. 11/12
    • C. 5/6
    • D. 2/5
    • Discuss
    • 2. 
      (6.5 x 4.7 + 6.5 x 5.3 ) / (1.3 x 7.9 - 1.3 x 6.9) =?

    • Options
    • A. 3.9
    • B. 39
    • C. 34.45
    • D. 50
    • Discuss
    • 3. 
      [(3.537 - .948) 2 + (3.537 + .948) 2] / [(3.537) 2 + (.948) 2] =?

    • Options
    • A. 4.485
    • B. 2.589
    • C. 4
    • D. 2
    • Discuss
    • 4. 
      (.23 - .023) / ( .0023 / 23 ) =?

    • Options
    • A. 0.207
    • B. 207
    • C. 2070
    • D. 0.0207
    • Discuss
    • 5. 
      If ? 0.05 x 0.5 x a = 0.5 x 0.05 x ?b, then a/b =?

    • Options
    • A. .0025
    • B. .025
    • C. .25
    • D. none of these
    • Discuss
    • 6. 
      (.58 x .58 x .58 - .42 x .42 x .42 - 3 x .58 x .42 x .16) =?

    • Options
    • A. 0.004096
    • B. 1.3976
    • C. 0.16
    • D. 1
    • Discuss
    • 7. 
      If 3 is added to the denominator of a fraction, it becomes 1/3 and if 4 be added to its numerator, It becomes 3/4, then fraction is?

    • Options
    • A. 4/9
    • B. 3/20
    • C. 7/24
    • D. 5/12
    • Discuss
    • 8. 
      If the numerator of a fraction is increased by 2 and the denominator is increased by 1, the fraction because 5/8 and if the numerator of the same fraction is increased by 3 and the denominator is increased by 1, the fraction becomes 3/4 . What is the original fraction?

    • Options
    • A. Data inadequate
    • B. 2/7
    • C. 4/7
    • D. 3/7
    • Discuss
    • 9. 
      If the numerator of a fraction is increased by 2 and denominator is increased by 3, the faction becomes 7/9 and if numerator as well as denominator are decreased by 1, the fraction becomes 4/5. What is the original fraction?

    • Options
    • A. 13/16
    • B. 9/11
    • C. 5/6
    • D. 17/21
    • Discuss
    • 10. 
      If a fraction's numerator is increased by 1 and the denominator is increased by 1 and denominator is increased by 2 then the fraction becomes 2/3. But when the numerator is increased by 5 and the denominator is increased by 1, then the fraction becomes 5/4. What is the value of the original fraction?

    • Options
    • A. 3/7
    • B. 5/8
    • C. 5/7
    • D. 6/7
    • Discuss


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