In the middle of a round pool lies a beautiful water-lily. The water-lily doubles in size every day. After exactly 20 days the complete pool will be covered by the lily. After how many days will half of the pool be covered by the water-lily?

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In the middle of a round pool lies a beautiful water-lily. The water-lily doubles in size every day. After exactly 20 days the complete pool will be covered by the lily. After how many days will half of the pool be covered by the water-lily?

 I have highlighted the catch .Now can you think of the answer ?? Yes it is pretty simple , the answer is 19.   It is given the lily doubles in size everyday .If it completely covers the pool in 20 days then it must have covered half of the pool in 19 Days.
Now that's something cool . :D 


Comments

  1. UnknownJuly 25, 2016 at 12:23 AM

    19

    ReplyDelete
  2. UnknownJuly 25, 2016 at 12:23 AM

    19

    ReplyDelete
  3. UnknownJuly 25, 2016 at 12:27 AM

    19

    ReplyDelete
  4. UnknownJuly 25, 2016 at 12:34 AM

    19

    ReplyDelete
  5. UnknownJuly 25, 2016 at 12:34 AM

    19

    ReplyDelete
  6. ROSHAN PAHUNEJuly 25, 2016 at 12:43 AM

    19

    ReplyDelete
  7. ROSHAN PAHUNEJuly 25, 2016 at 12:44 AM

    19

    ReplyDelete
  8. UnknownJuly 25, 2016 at 6:12 AM

    19

    ReplyDelete
  9. Derek SuantakJuly 25, 2016 at 6:47 AM

    10

    ReplyDelete
  10. UnknownJuly 25, 2016 at 7:18 AM

    Its confirm that it will be the 19th day to cover the half pond with that lily

    ReplyDelete
  11. UnknownJuly 25, 2016 at 7:18 AM

    Its confirm that it will be the 19th day to cover the half pond with that lily

    ReplyDelete
  12. UnknownJuly 25, 2016 at 7:24 AM

    On 20th day

    ReplyDelete
  13. UnknownJuly 25, 2016 at 7:24 AM

    On 20th day

    ReplyDelete
  14. AnonymousJuly 25, 2016 at 9:02 AM

    Since the water lily doubles its size every day and the complete pool is covered after 20 days, half of the pool will be covered 1 day before that - after 19 days.

    ReplyDelete
  15. AnonymousJuly 25, 2016 at 9:02 AM

    Since the water lily doubles its size every day and the complete pool is covered after 20 days, half of the pool will be covered 1 day before that - after 19 days.

    ReplyDelete
  16. Google userJuly 25, 2016 at 9:25 AM

    19

    ReplyDelete
  17. Google userJuly 25, 2016 at 9:25 AM

    19

    ReplyDelete
  18. UnknownJuly 25, 2016 at 9:43 AM

    19

    ReplyDelete
  19. UnknownJuly 25, 2016 at 10:05 AM

    19

    ReplyDelete
  20. UnknownJuly 25, 2016 at 10:06 AM

    19

    ReplyDelete
  21. UnknownJuly 25, 2016 at 10:09 AM

    19

    ReplyDelete
  22. PARAG NUKTEJuly 25, 2016 at 10:36 AM

    19

    ReplyDelete
  23. PARAG NUKTEJuly 25, 2016 at 10:36 AM

    19

    ReplyDelete
  24. UnknownJuly 25, 2016 at 11:22 AM

    19

    ReplyDelete
  25. UnknownJuly 25, 2016 at 11:25 AM

    After 20th day full pool will be covered or on 20th day..
    As per after 20 days.. on the 20th day it'll cover half the pool...

    ReplyDelete
  26. UnknownJuly 25, 2016 at 11:39 AM

    On 19 day

    ReplyDelete
  27. UnknownJuly 25, 2016 at 11:40 AM

    On 19 day

    ReplyDelete
  28. UnknownJuly 25, 2016 at 12:08 PM

    Noo correct answer is 10 because every second day the lili covers the double

    ReplyDelete
  29. UnknownJuly 25, 2016 at 2:46 PM

    There is no chance tobe half its every day the water lili coverd full.

    ReplyDelete
  30. UnknownJuly 25, 2016 at 2:47 PM

    There is no chance tobe half its every day the water lili coverd full.

    ReplyDelete
  31. Manish KashyapJuly 25, 2016 at 4:40 PM

    19

    ReplyDelete
  32. BitdarkJuly 26, 2016 at 7:14 AM

    19

    ReplyDelete
  33. BitdarkJuly 26, 2016 at 7:14 AM

    19

    ReplyDelete
  34. AnonymousJuly 26, 2016 at 9:16 AM

    What Lilli size on 21st day:/

    ReplyDelete
  35. UnknownJuly 30, 2016 at 3:23 PM

    19

    ReplyDelete
  36. UnknownJuly 30, 2016 at 3:23 PM

    19

    ReplyDelete
  37. UnknownJune 13, 2020 at 3:53 PM

    Answers is 29 days.

    ReplyDelete
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  43. UnknownMay 20, 2021 at 1:20 PM

    19

    ReplyDelete

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