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Mathematics 16 Online
OpenStudy (anonymous):

hallow glass cylinder filled with 10 diff colour balls radious of each equal to radious of cylinder. no.of ways in which white,black,red balls are never together. guess??

OpenStudy (kc_kennylau):

Where are you from? :) Welcome to OpenStudy btw :D

OpenStudy (anonymous):

hello.. im from india

OpenStudy (kc_kennylau):

@phi idk how to do :/

OpenStudy (phi):

Here is what I came up with. There may be a shorter way to the solution, but I don't know it.

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