# math

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A box contains 12 lightbulbs. Find the number of ordered N samples of size 3:

(a) with replacement
(b) without replacement

Also, please do Not solve.

• math -

You are probably not getting any replies because we might all be confused by
" Find the number of ordered N samples of size 3: "

I have no idea what you mean.

Are there different sizes of lightbulbs?
Are we choosing lightbulbs?
???

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