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Please help me I need to turn in tomorrow

Please Help Me I Need To Turn In Tomorrow class=

Sagot :

Answer:

Answer: B. 5

Step-by-step explanation:

Combination

It's a selection of items from a collection, such that the order of selection does not matter.

It can be calculated by using factorials with the formula:

[tex]\displaystyle _mC_n=\frac{m!}{(m-n)!\ n!}[/tex]

Let's calculate:

[tex]\displaystyle _5C_1=\frac{5!}{(5-1)!\ 1!}[/tex]

[tex]\displaystyle _5C_1=\frac{5!}{(4)!\ 1!}[/tex]

Since 5!=5*4! and 1!=1:

[tex]\displaystyle _5C_1=\frac{5*4!}{(4)!\ 1!}[/tex]

Simplifying:

[tex]\displaystyle _5C_1=\frac{5}{1}=5[/tex]

Answer: B. 5