Jun 15, 2024 · However, I usually like to solve any probability question using permutations/ combinations as well, just to get more practice, but when I tried solving this question using them I couldn't even …

Apr 20, 2015 · I understand the formulae for combinations and permutations and that for the binomial distribution. However, I'm confused about their application to coin tossing. Consider three tosses. …

Aug 24, 2013 · The number of different combinations is $\binom {4+6-1} {6} = 84. $ Think of it this way: If you wanted 2 cans of soda pop from the 4 brands, the second can of pop can be the same as the …

Jan 8, 2016 · 2 I would suggest you to start out with Discrete Mathematics and Its Applications by Kenneth H. Rosen. The 6th chapter about Counting will give you a good edge over permutations and …

Sep 10, 2021 · Permutations and Combinations - and repeating letters case Ask Question Asked 4 years, 4 months ago Modified 4 years, 3 months ago

Nov 25, 2018 · I'm currently working on a probability course, and I am constantly having trouble figuring out when to use permutations vs. combinations vs. factorials vs. exponents in order to calculate …

Feb 16, 2015 · I need help with the following question which I cannot seem to solve: 17 students are sitting in a circle. Each person shakes hands with everyone but his/her neighbours. How many …

Permutations are used when one is concerned with order. For example, if you wanted to choose how many ways are there to arrange five people in a line, the answer will be different. In your case, a …

Apr 18, 2015 · The number of permutations is how many different ways they can all be re-arranged; since there are five elements, the answer is 5! With combinations one is asking a different question; …

Nov 24, 2016 · The formula for the number of permutations is obtained by applying the principle of multiplication. These are two different things, the principle of addition is a general principle, while …