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How many ways can you choose a manager and assistant from 7-person task force? *
asked
Aug 24, 2022
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How many ways can you choose a manager and assistant from 7-person task force? *
Mathematics
high-school
Golem
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We are interested in selecting 2 people from the 7-person task force.
n = 7
r = 2
nPr = n! / (n-r)!
7!
------
(7-2)!
=
7!
----
5!
7×6×5×4×3×2×1
------------------------
5×4×3×2×1
= 7×6
= 42
Superjer
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Aug 30, 2022
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Superjer
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