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  • Question
  • How many number of weights do you need to weight 31 kg of Rice if you have one kg of weight stone ?


  • Options
  • A. 3
  • B. 5
  • C. 7
  • D. 9

  • Correct Answer


  • Explanation

    There are total 5 ways.
    we have only one kg of weight so,
    2kg = 1kg + 1kg
    4kg = 1 + 2 + 1
    8kg = 1 + 2 + 4 + 1
    16kg = 1 + 2 + 4 + 8 + 1
    31kg = 1 + 2 + 4 + 8 + 16
    So 5 weights are needed.

  • Tags: AIEEE, Bank Exams, CAT, GATE, GRE, TOEFL, Bank Clerk, Bank PO

    More questions

    • 1. 
      ba__cb__b__bab

    • Options
    • A. .acbb
    • B. .bacc
    • C. .bcaa
    • D. .cabb
    • Discuss
    • 2. Find the odd one out:

    • Options
    • A. Rabbit
    • B. rat
    • C. mongoose
    • D. Squirrel
    • Discuss
    • 3. 
      NA

    • Options
    • A. Basket
    • B. Barrel
    • C. Bag
    • D. Barrow
    • Discuss
    • 4. 
      NA

    • Options
    • A. B-F
    • B. J-N
    • C. M-Q
    • D. T-U
    • Discuss
    • 5. 
      10 : 91 :: 9 :?

    • Options
    • A. 69
    • B. 72
    • C. 9
    • D. 97
    • Discuss
    • 6. 
      63 : 21 :: 27 :?

    • Options
    • A. 6
    • B. 9
    • C. 1
    • D. 3
    • Discuss
    • 7. 
      Who sits between G and D?

    • Options
    • A. H
    • B. D
    • C. F
    • D. E
    • Discuss
    • 8. Find the odd one out:

    • Options
    • A. 49
    • B. 36
    • C. 65
    • D. 100
    • Discuss
    • 9. 
      NA

    • Options
    • A. Ring
    • B. Tyre
    • C. Plate
    • D. Bangle
    • Discuss
    • 10. 
      NA

    • Options
    • A. Huge
    • B. Tiny
    • C. Heavy
    • D. Small
    • Discuss


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