A chef has 10 spice jars, but his new spice rack only holds 8 spice jars. How many ways can he arrange 8 jars on the spice rack?
assuming order is irrelevant you would use combinations.
you have 10 possible choices but you are only using 8.
Actually you should use combinations or permutations...If all jars are different use permutations else combination is key
i'm pretty sure that you would use combinations
because it was never specified that each of the spice bottles were inherently different.
oh oh thanks :)
if the problem said we have 10 spice bottles "oregano, chilli powder, garlic...." then you should use permutations because having oregano, chilli powder and garlic is different than having garlic, chilli powder, and then oregano. however, if it doesn't make it apparent that each of the bottles is unique, then we use combinations.
@tomo is completely correct :D
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