Learning Quant through problem solving | |

Year after year, the only burning question which
nags my mind is “how do I prepare students better for CAT quant?” Many of the
answers have started coming. For example, after two years of TathaGat, we have
realized that making our classroom teaching heavy with quality questions yields
better results than having mere practice questions in the classroom content and
having tests and mocks full of quality material. For one thing, many students
don’t solve the mocks completely. For another, by the time mocks have arrived,
they don’t have enough time to deliberate and develop the fundamentals behind
good problems. Second thing which we have seen is that exposing students to a
vast variety of questions on different fundas is better than giving repeated
questions on the same funda. Although collecting problems of different flavors
and colours is not easy, it is better than having repeated problems. Still, we
have not worked everything out. There are questions which are unanswered. And
all of them boil down to the same problem- how to make quant more easily
understandable to students? Is quant really difficult to master for students
who did not pursue it after school? My
vehement answer is no. It is not difficult to master. It takes only as much
pain as it takes to master any other subject. And like any other subject, it
becomes more and more understandable as you spend more and more time on it. But
learning does not happen in classrooms. It happens when you look for new
problems, try and discover new things, think deeply about some topics,
experiment on your own, test your own theories, and so many other things. The
key is to get totally involved. In this article, maybe my CAT aspirants will
get some feel about how an aptitude for quant is slowly developed through different
adventures. I was recently having a look at a problem that I had posted in the Quant-DI forum long time back. The problem can be found in TG Special- 1 thread, a collection of my problems that I keep posting in the forum. The problem, shown in the figure below is extremely short: |

Re: Learning Quant through problem solving | |

Is it 10 pisoners ??? |

Re: Learning Quant through problem solving | |

yep. |

Re: Learning Quant through problem solving | |

can u pl explain how it is 10 |

Re: Learning Quant through problem solving | |

hey thanks a lot. |

Re: Learning Quant through problem solving | |

Tg, You have amazing power of lucid |

Re: Learning Quant through problem solving | |

this last 1 was a stoner mannn..! awesome..n yeah... eye opener |

Re: Learning Quant through problem solving | |

Hi all.. can anyone explain the logic of the coprime numbers and the equation related to it.. thanks & regards lalita |

Re: Learning Quant through problem solving | |

hi TG i dint get prb 5th the plynomial one...could u explain it in different way |

Re: Learning Quant through problem solving | |

Thanks TG !!! Add more problems please |

Re: Learning Quant through problem solving | |

Thanks TG.. Sorry, I cd not reply earlier because i was busy in my project work... |

Re: Learning Quant through problem solving | |

wat if the coefficients r negative as atul asked.......... plzz xplain |

Re: Learning Quant through problem solving | |

Hi Anirban, Question to padh lo. whole number coefficients negative kaise ho sakte hain. Total Gadha |

Re: Learning Quant through problem solving | |

tg sir, oops..srry sir ji..... |

Re: Still wondering | |

u r gr8......Brat4Cat thx for this gr8 solution!!!!! |

Re: Still wondering | |

The question asks for minimum prisoners. I don't understand y only 1 can't do. We can ask him to drink from each bottle till he dies...Plz help! |

No of Primes | |

Hi I am not getting one thing....does phai(N) give the no of primes less than N???? if so....then phai(102)=102(1-1/2)(1-1/3)(1-1/17)=32 which is not true.... |

Re: No of Primes | |

Hi Sandipan It gives number of numbers which are co-prime to N and less than N. |

Re: Learning Quant through problem solving | |

using binary logic we get 10. But how logically min 10 are required to test 1000 bottles? |