mdlane04 mdlane04

31-03-2017
Mathematics

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Erica gets a new credit card. What is the probability that the last four digits are all 5s?

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suzy777 suzy777

31-03-2017

5/20 braces you do 5•4=20 and it's out of 5 so 5/20

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IGotChillsTheyreX IGotChillsTheyreX

31-03-2017

Your answer is 1/10,000
There are 10 possible chances for each digit. The chances of getting a 5 is 1/10 for each. 1/10 four times (1/10x1/10x1/10x1/10) = 1/10,000

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