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Home Aptitude Odd Man Out and Series See What Others Are Saying!
  • Question
  • 125, 123, 120, 115, 108, 100, 84?


  • Options
  • A. 125
  • B. 115
  • C. 100
  • D. 84

  • Correct Answer
  • 100 

    Explanation

    Prime numbers 2, 3, 5, 7, 11, 13 have successively been subtracted. So, 100 is wrong. It must be (108 - 11) i.e., 97.


  • More questions

    • 1. 
      Diagonals of a rhombus area 1 m and 1.5 m in lengths. The area of the rhombus is

    • Options
    • A. 0.75 m2
    • B. 1.5 m2
    • C. 1.5 m2
    • D. 0.375 m2
    • Discuss
    • 2. 
      In how many ways, the letters of the word 'STRESS' can be arranged?

    • Options
    • A. 360
    • B. 240
    • C. 720
    • D. 120
    • Discuss
    • 3. 
      If there number are 2a, 5a, and 7a, what will be their LCM?

    • Options
    • A. 70a
    • B. 65a
    • C. 75a
    • D. 70a3
    • Discuss
    • 4. 
      H.C.F of three numbers is 12. If they be in the ratio 1: 2: 3, the numbers are?

    • Options
    • A. 12, 24, 36
    • B. 10, 20, 30
    • C. 5, 10, 15
    • D. 4, 8, 12
    • Discuss
    • 5. The banker's discount on a sum of money for 1½ years is Rs. 558 and the true discount on the same sum for 2 years is Rs. 600. The rate percent is:

    • Options
    • A. 10%
    • B. 13%
    • C. 12%
    • D. 15%
    • Discuss
    • 6. A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is:

    • Options
    • A. 3.6 kg
    • B. 3.696 kg
    • C. 36 kg
    • D. 36.9 kg
    • Discuss
    • 7. 
      If one rolls a fair sides die twice, what is the probability that the die will land on the same number on both the occasions?

    • Options
    • A. 1/12
    • B. 1/6
    • C. 1/24
    • D. 1/8
    • Discuss
    • 8. If a = 0.1039, then the value of √4a2 - 4a + 1 + 3a is:


    • Options
    • A. 0.1039
    • B. 0.2078
    • C. 1.1039
    • D. 2.1039
    • Discuss
    • 9. 
      (.125 + .027) / (.5 x .5 - 1.5 + .09) =?

    • Options
    • A. .08
    • B. 1
    • C. .2
    • D. .8
    • Discuss
    • 10. 
      The speed of a boat downstream is 15 km/hr and the speed of the stream is 1.5 km/hr. The speed of the boat upstream?

    • Options
    • A. 13.5 km/hr
    • B. 16.5 km/hr
    • C. 12 km/hr
    • D. 8.25 km/hr
    • Discuss


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