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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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