kgoodaall kgoodaall

30-10-2020
Mathematics

contestada

A professor gives his students 9 essay questions to prepare for an exam. Only 2 of the questions will actually appear on the exam. How many different exams are possible?

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gardnerdanj gardnerdanj

01-11-2020

Answer:

There are 36 possible exams.

Step-by-step explanation:

How many ways can you select 2 questions out of 9? 9 choose 2.

[tex]\frac{9!}{2!7!}[/tex]= 36

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