Permutations and combinations aptitude test problems question answers shortcut
Combination and permutation is one of the topic comes under aptitude questions. The formula of this is used to find the solution of the problem. Quantitative aptitude problems on this topic is very useful for the preparation of MBA exams like GRE, GMAT, CAT, MAT, bank exams like SBI, IBPS. Permutation & combination math become easy only when you go through the basics. The aptitude sums with formula, tips, shortcuts were posted here. You can also find here the answer for the difference between them. Lets us first start with combination and permutation formulae.
Difference Between permutation and combination
Permutation and combination formula with example pdf
Formula of permutation and combination is given below. Important Problems were solved using this formula.
In the above given formula of permutation and combination the concepts were explained clearly. Basic concept and notes of permutation and combination link given below.
Permutation and combination problems shortcut tricks
Example permutation and combination with answers are given below.
Combination formula: nCr
We hope that you understood the concept of combination. Let we now start with the numerical problems on permutation and combination which is derived using the important formulas and solutions also given for each questions.
Permutation combination questions with answers
Questions on permutation and combination with answers are given so you no need to find the answers somewhere. This section will give you the tricks to solve the important questions in this topic. In this you have a set of four different problems solved in quicker method which will help you to practice the problems.
Permutation formula : nPr
1. In how many different ways can the letters of the word ‘LEADER’ be arranged in such a way that the vowels always come together?
2. A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?
3.In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?
You can also download the below given video tutorial for more explanation.
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