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Aliun [14]
2 years ago
6

Plz help on this and explain how u got it, thanks have a nice day!

Mathematics
1 answer:
Anettt [7]2 years ago
7 0

Answer:

i think the answer would be B and C

Step-by-step explanation:

hope it helps:)

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3 years ago
After a bride has interviewed 7 DJs to play at her wedding, her fiance tells her she needs to narrow it down to 4 DJs. In how ma
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Answer:

840

Step-by-step explanation:

Given

DJs = 7

To\ pick = 4

Required

Determine the number of rankings

The term "ranking" as used in this question implies permutation and the required is calculated using:

^nP_r = \frac{n!}{(n-r)!}

Where

n = 7

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So:

^nP_r = \frac{n!}{(n-r)!}

^7P_4 = \frac{7!}{(7-4)!}

^7P_4 = \frac{7!}{3!}

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<em>Hence, number of ranking is 840</em>

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3 years ago
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pav-90 [236]

Answer:

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Step-by-step explanation:

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3 years ago
Poi
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Answer:

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