Tag - combination

[Aptitude] Permutation Combination made easy without Formulas

If the following questions make you uncomfortable, then read this article. In how many ways can 5 member committee be formed out of 20 students? Or How many ways can the word “UPSC” be arranged so that “U” is always second from left. In [...]

[Aptitude] Probability Made Easy (Extension of Permutation Combination Concept!)

Introduction Case1 : Probability of Particular Actor getting selected Case 2: Probability of One lady getting selected Case 3: One man and one woman (“AND” case) Case 4: “Atleast” one man is selected (“OR” case) Alternative method: 1 Minus Case 5: Probability of [...]