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devlian [24]
3 years ago
6

credit cards place a 3 digit security code on the back of cards what is the probability that a code starts with a number 7

Mathematics
1 answer:
WARRIOR [948]3 years ago
8 0
This answer is not 3/4. The answer is 1/10. I found this by knowing that there are 10 numbers and there is a 1/10 chance that it will start with 7. I would really appreciate it if I could get brainliest. Thanks!! =D
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3 years ago
A company has 31 salespeople. A board member at the company asks for a list of the top 4 salespeople, ranked in order of effecti
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Answer:

31465 ways

Step-by-step explanation:

Given data

Let us apply the combination formula

nCr = n! / r! * (n - r)!

n= 31

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substitute

= 31!/4!(31-4)!

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= 31*30*29*28*27!/ 4!(27)!

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8 0
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