Wednesday, December 29, 2010

पानी की टंकी और गणित... (Water tank and typical maths...)

विशेष नोट : अगर आप जवाब ढूंढ लेते हैं तो ठीक, वरना कमेंट लिख दीजिएगा, मैं जवाब आपको मेल के जरिये भेज दूंगा...

स्कूल में मौजूद पीने के पानी की टंकी में एक समान गति से लगातार पानी भरा जाता है...

70 बच्चे उस टंकी को 24 दिन में, तथा 30 बच्चे उस टंकी को 60 दिन में खाली कर सकते हैं...

अब क्या आप लोग मुझे बता सकते हैं, यदि मैं चाहूं कि वह टंकी 96 दिन में खाली हो तो मुझे कितने बच्चों की ज़रूरत होगी...?

Now, the same riddle in English...

Special Note: If you succeed in solving this one, well and good; but in case, you don't, just leave a comment, and I will mail the answer to you...

Drinkable Water in the school tank is being filled at a continuous and uniform pace...

It takes 24 days for 70 kids and 60 days for 30 kids to drink the water tank empty...

Now, can guys tell me, how many kids will be needed if I want the water tank to go empty in 96 days...?
द्वारा वक्त हुआ था 2:37:00 PM
कीवर्ड अथवा लेबल , , , , , , , , , , , , , , , , , , ,

30 comments:

  1. प्रकाश गोविंदDecember 29, 2010 at 6:29 PM

    This comment has been removed by a blog administrator.

    ReplyDelete
  2. Vivek RastogiDecember 29, 2010 at 9:40 PM

    बिल्कुल सही, प्रकाश भाई... बधाई... :-)

    ReplyDelete
  3. ZAINULNovember 28, 2011 at 5:03 PM

    pahle 70 bachche 24 din me
    then 30 bachche 60 din me=100 bachhe & 84 din
    then 6 bachhe 12 din
    total-106 bachche 96 din

    ReplyDelete
  4. Vivek RastogiNovember 28, 2011 at 7:49 PM

    Najo ji, mujhe afsos hai, lekin aapka jawaab bilkul galat hai... Ek baar phir koshish karein... :-)

    ReplyDelete
  5. ZAINULNovember 28, 2011 at 8:03 PM

    sahi answer bata do plz

    ReplyDelete
  6. Vivek RastogiNovember 28, 2011 at 10:45 PM

    Apna email ID bhej do, Najo ji... :-)

    ReplyDelete
  7. ZAINULNovember 29, 2011 at 2:19 PM

    my id is nazo.00786@gmail.com

    ReplyDelete
  8. shravanApril 4, 2012 at 1:24 PM

    SIr JI anSweR 175 childreN hOngE SayAD,...

    ReplyDelete
    Replies
    1. Vivek RastogiApril 4, 2012 at 1:32 PM

      Shravan, tumhaara yeh jawaab bilkul galat hai, dost... Ek baar phir koshish karo... :-)

      Delete
  9. shravanApril 4, 2012 at 1:31 PM

    Na sIr JI merA anSWeR wrOnG haI pHiR sE sOcH raha Hu

    ReplyDelete
  10. shravanApril 4, 2012 at 1:34 PM

    QUeStIoN merI saMjdAni MaI to aA CHuKa HaI bUt YE sAmaJh MaI Na AA RahA haI kI kaIse SOLvE kaRu....

    ReplyDelete
    Replies
    1. Vivek RastogiApril 4, 2012 at 2:01 PM

      Poore tareeke ke saath jawaab tumhe mail kar diya hai, Shravan... :-)

      Delete
  11. shravanApril 4, 2012 at 3:05 PM

    ThaNkS sIr, BaHuT hI aaSan LaG rahA haI anSWEr PaaNE ke BaaD...

    ReplyDelete
    Replies
    1. Vivek RastogiApril 4, 2012 at 3:08 PM

      गणित में हमेशा ऐसा ही होता है, श्रवण... मैं हमेशा कहता हूं कि गणित फॉर्मूले रटने (या याद करने) का नाम हरगिज़ नहीं है, बल्कि अपने अंदर तर्कक्षमता को विकसित करने का नाम है, ताकि सवाल पढ़कर समझा जा सके, कौन-सा फॉर्मूला इस्तेमाल करना है... :-)

      Delete
  12. UnknownMarch 3, 2014 at 3:17 AM

    18 bchhe

    ReplyDelete
    Replies
    1. Vivek RastogiMarch 3, 2014 at 3:36 PM

      Mujhe afsos hai, Sohit, lekin tumhaara jawaab galat hai... Ek baar phir koshish karo... Best of luck... :-)

      Delete
  13. UnknownMarch 8, 2014 at 12:37 AM

    16 ho skte hai. Is trah ke paheli ke liye formule hote hai gurudev jo yad nhi rhte mjhe so ek andaj me 12, 15 bhe ho skte hai agar 16 nhi huye to.

    ReplyDelete
    Replies
    1. Vivek RastogiMarch 8, 2014 at 9:58 AM

      Mujhe behad afsos hai, Sohit, lekin tumhaara teeno jawaab galat hain... Ek baar phir koshish karo, dost... :-)

      Delete
  14. UnknownMarch 8, 2014 at 2:53 PM

    Tukke keval tukke he rah jate hai gurudev. Iska koi formula nhi mil rha hai.

    ReplyDelete
  15. RAJATJuly 16, 2014 at 2:03 PM

    Sir gee aap kee is paheli se mujhe sikh mili hai agar hum groum me kaam kare to kaam to niyaam anushaar jaldi hota hai lekin kaam me ruchi ke karan aur itne logo ke saath kaam karne me kaam aur bhee jaldi poora hota hai jaisa kee aapki paheli me hua hai

    ReplyDelete
  16. RAJATJuly 16, 2014 at 2:06 PM

    Mera ans hai 50 bachhe

    ReplyDelete
    Replies
    1. Vivek RastogiJuly 16, 2014 at 2:52 PM

      Rajat, tumhaara jawaab bilkul galat hai... Ek baar phir koshish karo, dost... Best of luck... :-)

      Delete
  17. UnknownJuly 19, 2014 at 12:32 AM

    This comment has been removed by a blog administrator.

    ReplyDelete
    Replies
    1. Vivek RastogiJuly 21, 2014 at 10:54 AM

      Sohit, tumhaara jawaab sahi hai... Badhaai... :-)

      Delete
  18. RAJATJuly 19, 2014 at 4:04 PM

    This comment has been removed by a blog administrator.

    ReplyDelete
    Replies
    1. Vivek RastogiJuly 21, 2014 at 11:00 AM

      Rajat, tumne do jawaab diye hain is baar, aur unmein se ek theek hai... :-)

      Delete
  19. RAJATJuly 21, 2014 at 12:06 PM

    This comment has been removed by a blog administrator.

    ReplyDelete
  20. UnknownJune 21, 2016 at 11:56 PM

    48 bachche

    ReplyDelete
  21. Vivek RastogiJuly 5, 2016 at 1:12 PM

    NK Meghani ji, aapka jawaab galat hai... Ek baar phir koshish keejiye... Best of luck...

    ReplyDelete

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