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Feliz [49]
3 years ago
5

Is this problem a combination or permutation?

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
5 0

Answer:

Combination

Step-by-step explanation:

This is the answer because:

1) The difference between combinations and permutations is the ordering of each term.

Combinations - the order doesn't matter

Permutations - the order matters.

An example of this is, if you enter the number combination 5324 into your locker/cabinet, it won't open up because it is a different ordering and needs a specific combination which means it's permutation.  

2) In this situation, the order doesn't not matter since they just want different ways to select an assistant, a representative, a treasurer, and a recorder.

Hope this helps! :D

HACTEHA [7]3 years ago
4 0

Answer: Permutation Problem

There are 5040 permutations possible

==================================================

Explanation:

Order matters because the positions are different.

(A,B,C,D) is different from (B,A,C,D) because the first means person A is the assistant while the second means person B is the assistant.

We have 10 choices for the first slot, 9 for the second, 8 for the third, and 7 for the fourth. We count down the values because a person cannot be reselected to serve multiple positions simultaneously.

Multiply out those values to get 10*9*8*7 = 5040

There are 5040 permutations possible.

---------------

As an alternative, you can use the nPr permutation formula with n = 10 and r = 4 like so

_n P_r = \frac{n!}{(n-r)!}\\\\_{10} P_{4} = \frac{10!}{(10-4)!}\\\\_{10} P_{4} = \frac{10!}{6!}\\\\_{10} P_{4} = \frac{10*9*8*7*6!}{6!}\\\\_{10} P_{4} = 10*9*8*7 \ \ \text{ ... note how this shows up again}\\\\_{10} P_{4} = 5040\\\\

We get the same answer as before.

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Step-by-step explanation:

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2 years ago
Una librería consta de 5400 libros repartidos en 3 estanterías
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Answer:

B = 900 Libros

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Step-by-step explanation:

A = 3B

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7 0
3 years ago
I need math help please.
meriva

Answer:

B

Step-by-step explanation:

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8 0
3 years ago
Which inequality is true use the number line to help​
Nata [24]

Answer:

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Step-by-step explanation:

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-2.5 > -1.5 False

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1.5 > 2 1/2

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0.5 is not > 0.5

0.5 = 0.5

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Negative numbers are oposite of positive numbers when using inequalities. Just as 0 < 1, -1 < 0.

-2.5 is not > -1.5

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7 0
3 years ago
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IrinaVladis [17]

Answer:

2x - y = 9

Step-by-step explanation:

The equation of a line in standard form is

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y + 1 = 2x - 8 ( add 8 to both sides )

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9 = 2x - y ⇒ 2x - y = 9 ← in standard form

5 0
3 years ago
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