permutations and combinations | Mathematics | Page 1

finite hatchBOT Mar 12, 2024, 1:53 PM

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amber prawn Mar 12, 2024, 1:54 PM

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permutations and combinations

lyric vapor Mar 12, 2024, 2:00 PM

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its basically this question :
how we can move in a grid by only going right and left

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have you seen such questions before ?

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do you know permutations with repetition ?

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@amber prawn

amber prawn Mar 12, 2024, 2:01 PM

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like the formula?

lyric vapor Mar 12, 2024, 2:01 PM

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the concept itself

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and yeh including the formula

amber prawn Mar 12, 2024, 2:02 PM

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yeah yeah

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the problem was with lattice

lyric vapor Mar 12, 2024, 2:02 PM

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ok then

amber prawn Mar 12, 2024, 2:02 PM

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like i didnt know what it was

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i mean how it fit in with permutations

lyric vapor Mar 12, 2024, 2:02 PM

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i dont know the meaning since im not a native speaker but it seems its basically a grid

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the question is just complicating stuff

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it basically means this :

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https://ibb.co/Jz8ByB6

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its a grid that you are only allowed to move right and up

amber prawn Mar 12, 2024, 2:04 PM

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so there are as many moves from origin to a, b as there are permutations of

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the same

lyric vapor Mar 12, 2024, 2:05 PM

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wdym

amber prawn Mar 12, 2024, 2:06 PM

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i mean to move from origin to a, b there will x moves of a and y moves of b where each represents a 1 unit move on teh respective axis

lyric vapor Mar 12, 2024, 2:07 PM

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yeh thats the answer 👍

amber prawn Mar 12, 2024, 2:08 PM

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so we'll represent that as a permutation

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ok got it thanks

timid tangle Mar 13, 2024, 2:21 AM

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x+y!/(x! *y!)

pliant wedge Mar 13, 2024, 12:39 PM

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.solved

#permutations and combinations