The Concept of permutations and combinations

Permutation & Combination – it invariably evokes groans from a lot of students. And ironically the topic is just about counting, counting the number of ways in which certain event can happen. Since the counting can extend to a large number, we would fall short of fingers to count with and hence certain rules are framed. So P & C is essentially about rules to help us count.

Our Research & Findings

#IBPS PO

As a sample we have choosen the last 4 year's (2019, 2018, 2017, 2016) previously asked question papers. In quatitative aptitude section, a total number of questions asked are 35. Out of these 35 questions 2.86% of questions are from permutations and combinations.

#SBIPO

As a sample we have choosen the last 4 year's (2019, 2018, 2017, 2016) previously asked question papers. In quatitative aptitude section, a total number of questions asked are 35. Out of these 35 questions 3.57% of questions are from permutations and combinations.

#TCSNQT

As a sample we have choosen the last 4 year's (2019, 2018, 2017, 2016) previously asked question papers. In quatitative aptitude section, a total number of questions asked are 26. Out of these 26 questions 3.53% of questions are from permutations and combinations.

Teaching Methodology

  • Concepts based solutions
  • Short cut methods
  • Spatial visualization
Sample Question

In a room there are 10 men and each man shakes hands with every other man present. How many hand-shakes take place?
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