i recently had my A levels exam and was stuck at a question(adsbygoogle = window.adsbygoogle || []).push({});

there are 8 balls in a box, 3 are similar and the rest are different, how many ways can 3 balls be chosen if the order of picking out the balls is not important

its worth 4 marks, and i do not know where to start even.

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# Permutation and combination problem

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