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CHEWY25IN
Answered

How many choices does a student have in
doing 7 problems from a set of 12 problems?​

Sagot :

GRENINJACK31IN

Answer:

  • 3991680 choices

Solution:

[tex]n=12\\r=7\\\\_nP_r=\frac{n!}{(n-r)!} \\_{12}P_7=\frac{12!}{(12-7)!} =\frac{12!}{5!} =\frac{(12)(11)(10)(9)(8)(7)(6)5!}{5!} =(12)(11)(10)(9)(8)(7)(6)\\_{12}P_7=3991680[/tex]

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CUTIENICEAIN

Answer:

The options it gives for answers are: 12. 48. 495.

Step-by-step explanation:

[•.•ิ] Sana po makatulong;>

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