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 …

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. …

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 …

Total possible permutations is 62^8 However the rules state one numeric and one alpha must be used. The largest legal set considering all rules is 52^7 + 10^1. This is where 7 characters chosen are …

A permutation is all the ways of arranging all the combinations into specific orders like in a) A question on combinations. If there are 30 people in a class and you need to pick 2 people to clean up at the …

Nov 4, 2019 · 1 Clarifying the Difference Between Combinations and Permutations with Heads and Tails Combinations (nCk): When we count the number of ways to choose 2 heads (H) out of 4 flips, …

1 Regarding paw88789's response, it is mathematically correct, but omits the "why" of the question, which is why permutations should be used instead of combinations to determine the number of …

Oct 16, 2020 · This is a follow-up question of Is there an equation for permutations with different numbers of element available? For a regular permutation, the number of possible configurations for a …

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 …

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 …