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If Dwight Johnson has 7 courses to choose​ from, how many ways can he arrange his schedule if he must pick 4 of​ them?

User Ataxias
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1 Answer

6 votes

Answer:

35 ways

Explanation:


_7C_4=(7!)/(4!(7-4)!)=(7!)/(4!*3!)=(7*6*5)/(3*2*1)=(210)/(6)=35

Therefore, Dwight can arrange his schedule in 35 ways if he must pick 4 out of 7 courses to choose from.

User Animalito Maquina
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