michellelrodripbqhpz michellelrodripbqhpz

12-07-2018
Mathematics

contestada

There are 7 males and 5 females and we need to select 4 different people. how many ways can we select 4 people?

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konrad509 konrad509

12-07-2018

[tex] \displaystyle
\binom{12}{4}=\dfrac{12!}{4!8!}=\dfrac{9\cdot10\cdot11\cdot12}{2\cdot3\cdot4}=495 [/tex]

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