Monday, June 28, 2010

Puzzle Time.....

Hello Frnds !!!!

I have got some puzzles for you -

1- You are given two candles of equal size, which can burn 1 hour each(60 Minutes). You have to measure 90 minutes with these candles. (There is no scale or clock). Also u r given a lighter.

How would you measure 90 minutes???

2-  x^y = y^x and x!=y 
(x to the power of y = y to the power of x and x is not equal to y)

what are the values of x and y and how many such values exits???

Post the answers in the comments.... You may think I am asking you simply with out me knowing the answer.. I do knw the answer :) will wait for some time to see whether I get any answers from you people... :)

All The Best :)
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20 comments:

  1. AnandaVardhan ChagamreddyJune 28, 2010 at 1:52 PM

    1) First I will light a candle and blow it off when it becomes half of the other candle (i.e. using it to measure for 30 min), then I will light the other (full) candle and wait till it completely burns (60 min). Total 90 min
    2) x^y = y^x
    Apply log on both sides...
    Log x^y = Log y^x
    y Log x = x Log y
    x/y = Log y (base) x
    heehee thoooch... I'll come back to you on the 2nd one...

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  2. myworldnmywordsJune 28, 2010 at 1:54 PM

    anand... sagam ani ela telusthundi neeku ... it will npt be so accurate right... try for better one... :)

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  3. AnandaVardhan ChagamreddyJune 28, 2010 at 1:58 PM

    In that case, how can you tell that the candle takes exactly 60min to burn completely? Depending on the air flow, oxygen supply and candle make, the time taken to completely burn may vary :D

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  4. myworldnmywordsJune 28, 2010 at 2:00 PM

    yaayy.. answers raka cheppe reasns ivi .. ala air flow,oxygen supply vary avvani place lo petti sam some of candle ichamu ani anuko appudu enti mari ???

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  5. AnandaVardhan ChagamreddyJune 28, 2010 at 2:01 PM

    sare aithe... take candle-1 and light it on both sides, take candle-2 and light it on only one end... first one takes 30min to burn and 2nd one takes 60min... total 90 min... I thought of saving half of a candle for future... but u didn't allow me to :P

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  6. myworldnmywordsJune 28, 2010 at 2:02 PM

    he ha ha... crct anand... :) pattesaav... mari what about second one??

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  7. myworldnmywordsJune 28, 2010 at 2:03 PM

    one more - if you want to calculae 45 min with those 2 candles??? how will you do that ??

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  8. AnandaVardhan ChagamreddyJune 28, 2010 at 2:06 PM

    2) x^y question ki answer: not possible... emaina answer unte cheppu...

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  9. myworldnmywordsJune 28, 2010 at 2:07 PM

    answer is there... try .. try ...

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  10. AnandaVardhan ChagamreddyJune 28, 2010 at 2:09 PM

    45min aa simple... oka candle ni 2 sides veliginchu = 30min... inko candle ni edge lo + center lo veliginchu... [:P] 15 min... Total 45 min

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  11. AnandaVardhan ChagamreddyJune 28, 2010 at 2:11 PM

    enti try try... eppudooo chinnappudu marchipoyina logarithm kuda vesa... naku inka logarithms gurthunnayantene pedda wonder, thunder, blunder... anthakanna kashtam...

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  12. myworldnmywordsJune 28, 2010 at 2:12 PM

    he ha :)

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  13. AnandaVardhan ChagamreddyJune 28, 2010 at 2:14 PM

    x=2, y=4 :D

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  14. Suresh Kumar SJune 28, 2010 at 3:04 PM

    1. First light up the two ends of the 1st candle. When it will burn out light up one end of the second candle.(30+60=90).
    2. WIP :-)

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  15. myworldnmywordsJune 28, 2010 at 3:10 PM

    Suresh Ji .. what is WIP??? (Work In Progress??? ;))

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  16. AnandaVardhan ChagamreddyJune 29, 2010 at 9:11 AM

    2nd di nenu answer cheppesthaa... nannu aapaddu :D

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  17. myworldnmywordsJune 29, 2010 at 9:14 AM

    ha ha ha... cheppeseyyi anand... ninnu evaru aaparu le :)

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  18. priyanka prasadJune 29, 2010 at 9:58 AM

    second answer:x=2 and y=4....and first qtn ala copy chesi ila google lo paste cheste answer vastundi:p...nenu answer cheppakkarledu haha...

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  19. AnandaVardhan ChagamreddyJune 29, 2010 at 11:17 AM

    aaa thondi ikkada evaro google lo chusesaranta [:P]

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  20. myworldnmywordsJune 29, 2010 at 11:23 AM

    google lo choosindi first di ... second di kaadu .. nuvvu kooda first di google lone choosava anand :(

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