40
Tons Of Invites by Club India

Thread Status:
Not open for further replies.
  1. magesha
    Jelly Bean Oct 2, 2014

    magesha , Oct 2, 2014 :
    If you want to beat the latest contests, you need to think a bit.. The invite key format is given in first post - the code I have shared has been encrypted somehow. The hint tells you the key.
     

  2. acan86
    Donut Oct 2, 2014


  3. gamersworld
    Donut Oct 2, 2014


  4. magesha
    Jelly Bean Oct 2, 2014


  5. dedwards
    Eclair Oct 2, 2014

    dedwards , Oct 2, 2014 :
    Maybe the primitives Pythagorean triples?
     

  6. TheSaint
    Cupcake Oct 2, 2014


  7. renjuthomas123
    Gingerbread Oct 2, 2014


  8. magesha
    Jelly Bean Oct 2, 2014


  9. magesha
    Jelly Bean Oct 2, 2014


  10. TheSaint
    Cupcake Oct 2, 2014


  11. vietamese
    Donut Oct 2, 2014


  12. harshahv
    Jelly Bean Oct 2, 2014


  13. magesha
    Jelly Bean Oct 2, 2014

    magesha , Oct 2, 2014 :
    I too was taking a break - but someone kept posting for a new contest.. when we put up contests, there is nobody to try them :D:D
     

    Pratham Prakash Gupta likes this.
  14. magesha
    Jelly Bean Oct 2, 2014

    magesha , Oct 2, 2014 :
    Contest #54

    Contest is over! @neelaksh is winner! Congrats!

    This is going to be a relatively easy one. It's a riddle. If you solve it, PM me the answer and I will share the invite with you. To PM me, click on my pic and select "Start a conversation"

    Riddle:

    There are 100 doors in a hallway numbered 1 to 100. All doors are closed at the beginning of this process. For each number, the positive factors are calculated. And, for each factor, the corresponding door's status is changed - if it is opened, it is closed, and if it is closed, it is opened.

    At the end of the process, how many doors are left open? Which are the door numbers?

    For example, for 6, the positive factors are 1,6,2,3 - the door state will be changed four times. So, it will remain shut.

    Note: ALL FACTORS ARE TO BE CONSIDERED - NOT JUST PRIME FACTORS!

    Solution: Need to find the numbers that have odd number of factors. Those will be the perfect squares. All other numbers will have even number of factors.

    Answer: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 - 10 doors!
     
    Last edited: Oct 2, 2014

    Julius Edward likes this.
  15. Ponds186
    KitKat Oct 2, 2014

    Ponds186 , Oct 2, 2014 :
    Good start (y)
     

  16. Ponds186
    KitKat Oct 2, 2014

    Ponds186 , Oct 2, 2014 :
    Sets of 3 and Pythagoras. Rings a bell ?
     

  17. Julius Edward
    Honeycomb Oct 2, 2014


    magesha likes this.
  18. harshahv
    Jelly Bean Oct 2, 2014

    harshahv , Oct 2, 2014 :
    Positive factors or prime factors? 6 isn't a prime factor.
     

    Ponds186 likes this.
  19. harshahv
    Jelly Bean Oct 2, 2014

    harshahv , Oct 2, 2014 :
    Mathematics and 3? Pythagoras has to be there or thereabouts :p
     

    Julius Edward likes this.
  20. Ponds186
    KitKat Oct 2, 2014

    Ponds186 , Oct 2, 2014 :
    Expect the unexpected :p :p :p

    Pythagoras and 3 ?