logo

CuriousTab

CuriousTab

Discussion


Home Verbal Reasoning Arithmetic Reasoning See What Others Are Saying!
  • Question
  • An intelligent boy is doing a jigsaw with 275 pieces. Each day that he fits pieces together there are fewer pieces left, and it is reasonable to assume that he fits more pieces each day because the number left to sort out diminishes progressively. Hence he is able to fit an extra piece as each day goes by. On the first day he fits 20 pieces. How many days does it take for him to complete the puzzle ?


  • Options
  • A. 11 days
  • B. 15 days
  • C. 13 days
  • D. 16 days

  • Correct Answer
  • 11 days 

    Explanation

    Let 'n' number of days it take to complete.

     

    we know that sum of n number= n/2[2a+(n-1)d]
    where a=20,d=1;
    n/2[2x20+(n-1)1]=275
    n[n+39]=550
    n 2  + 39n - 550 = 0
      n 2 + 50n - 11n - 550 = 0
    (n-11) (n-50) = 0
    n-11 = 0;
    n = 11(Days).

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

    More questions

    • 1. Choose the word which is different from the rest.

    • Options
    • A. Bajra
    • B. Mustard
    • C. Rice
    • D. Wheat
    • E. Barley
    • Discuss
    • 2. Find the odd one out:

    • Options
    • A. 263
    • B. 111
    • C. 242
    • D. 551
    • Discuss
    • 3. Find the odd one out:

    • Options
    • A. 21
    • B. 69
    • C. 81
    • D. 83
    • Discuss
    • 4. 16 : 56 :: 32 :?

    • Options
    • A. 96
    • B. 112
    • C. 120
    • D. 128
    • Discuss
    • 5. 8 : 24 ::? : 32

    • Options
    • A. 5
    • B. 6
    • C. 10
    • D. 8
    • Discuss
    • 6. 
      'Uneasy' is to 'Quite" as 'Fit' is to

    • Options
    • A. Proper
    • B. Suitable
    • C. Pertinent
    • D. Unfit
    • Discuss
    • 7. 
      NA

    • Options
    • A. Desire
    • B. Hope
    • C. Want
    • D. Belief
    • Discuss
    • 8. 
      Statement :
      1. Some clerks are poor;
      2. A is poor
      Conclusion :
      I. A is clerk.
      II. A has a large family.

    • Options
    • A. Both conclusions I and Ii
    • B. Only conclusion II
    • C. Only conclusion I follows.
    • D. Neither conclusion I nor conclusion Ii follows.
    • Discuss
    • 9. 
      Ant : Fly : Bee

    • Options
    • A. Termite
    • B. Insect
    • C. Lizard
    • D. Small
    • Discuss
    • 10. 
      NA

    • Options
    • A. Radium
    • B. Thorium
    • C. Sodium
    • D. Uranium
    • Discuss


    Comments

    There are no comments.

Enter a new Comment