16 Comments

1. 

   ron on November 9, 2014 at 7:58 pm

   Simply awesome cleared lot of confusion wat an article sirjeee 🙂

   Reply
2. 

   Aravinth on October 26, 2013 at 10:00 am

   Simply superb sir..!! its very useful 🙂

   Reply
3. 

   Aadesh Saxena on June 4, 2013 at 9:48 am

   Really very impressive. The Article is very plausible. I am happy to see that how artistically the base concept is used to explain the topic.

   looking forward for few more 🙂

   Reply
4. 

   Venkatesh on April 6, 2013 at 6:58 am

   This is immensely useful.. thanks for the wonderful article.
   I noticed a small error though. In the introduction:

   “Equations involving difference and addition of two numbers, say x and y, will give solution over the set of integers only when either both x and y are odd or both are even.”

   it be both “Sum and difference of x and y” that should be even or odd rather than x and y both being even or odd for solution over the set of integers.

   correct me if I’m wrong.

   Reply
5. 

   vivekanand3435 on January 21, 2013 at 3:47 am

   great article…too good:)

   Reply
6. 

   Mukund on September 19, 2012 at 11:07 am

   Amazing write up, best part were the generalizations.. Gonna be super useful.
   Respect to you author.. ^_^

   Reply
7. 

   Amit Mishra on June 4, 2012 at 4:43 pm

   Puneet Sir What an article!

   Reply
8. 

   jaskiran on May 27, 2012 at 12:20 pm

   In question
   5. Find the number of positive integer solutions of equation x2 – y2 = 1215 ?
   Answer : 10

   1215 can be broken into 5 * 3^5 .. so the number of factors are 6 .. not 10 ??? plz tel me where am I wrong..

   same is the case in question.
   3. Find the number of positive integer solutions of equation x2 – y2 = 1547 ?

   Reply
   • 

     Charanjeet Singh on October 13, 2012 at 6:16 am

     Hi Jaskiran you are right the answer for 1215 is 6 and 1547 is 3. as it has facotr 1547= 17*13*7 so total 6/2 =3

9. 

   hiccup on May 20, 2012 at 8:26 am

   @Prashant,
   really nice article.
   what if only the integral solution is asked and the perfect square is 135^2
   suppose the question is (a-35)(b-35)=135^2,then find the number of integral solutions.

   Reply
10. 

    Prateek on April 25, 2012 at 6:07 pm

    Great work sir…desperately waiting 4 ur more upcoming posts..:)

    Reply
    • 

      prashant on April 26, 2012 at 8:59 am

      yeah we are doing our best to come up with more awesome content..:)

11. 

    Iconoclast on April 24, 2012 at 6:34 am

    Great… although, I never made a request for maths & quant related stuff but always wanted that. There are many who also feels so but never make a request.

    Please continue this initiative. Waiting for more articles on quant & DI.

    Reply
    • 

      prashant on April 24, 2012 at 7:53 am

      ahh great we could be of such service..:)

12. 

    Amit Chhabra on April 23, 2012 at 5:57 pm

    Awesome work Puneet Chhabra..

    Short cut plus concept clarification..Great.

    Thanks a lot .
    Will wait for other articles.

    Reply
    • 

      prashant on April 24, 2012 at 1:38 am

      thanks a lot amit..
      yeah would do our best to keep it rolling…:)