Answered

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Ms. De Leon wants to produce different sets of test questions for her essay test. If she plans to do this by putting together 3 out of 5 questions she prepared, how many different sets of questions could she contruct?
A.10
B. 20
C. 60
D. 80​

Sagot :

Answer:

A (10)

Explanation:

The teacher can choose 3 questions from 5 of them.

Therefore, we can say the equation is ₅C₃.

Given nacre = n! / r!(n-r)!

That is, 5! / 3!(2)!

= 5 x 4 / 2 x 1

= 20 / 2

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