Talk about permutations and combinations can be scary. I was in an interview a couple of years back, and one of the interviewers brought up this question about the difference between the two. Although, I was not being interviewed, I was baffled even while sitting on the side of the interviewers. Then, I found this brilliant article that explains the difference between the two. I wonder why I didn’t share it then and there. Please peruse.
I’ve always confused “permutation” and “combination” – which one’s which? Here’s an easy way to remember: permutation sounds complicated, doesn’t it? And it is. With permutations, every little detail matters. Alice, Bob and Charlie is different from Charlie, Bob and Alice (insert your friends’ names here).
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