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5 votes
5 votes
Can someone help me and explain how to do these probability questions?

(for the last one, type out the question for say a, b, c, or d)

Can someone help me and explain how to do these probability questions? (for the last-example-1
User Takeshin
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2 Answers

23 votes
23 votes

a. The probability is 1/100 since there are 10 possible digits (0-9) and you need the last two digits so
(1)/(10)*(1)/(10)=(1)/(100).

This is 1%.

b. Let's start by calculating the probability of getting the right digits knowing that they are both even.

We have a total of 5 even digits (0, 2, 4, 6, 8). You need the last two so
(1)/(5)*(1)/(5) =(1)/(25)=(4)/(100) which is 4%.

Therefore the answer is a) It increases the probability that your choice is correct to 1/25, or 4%, because each digit could be 0, 2, 4, 6 or 8.

User Ndotie
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2.6k points
21 votes
21 votes
The answer to question A is 1/100 and 1%. For question B I think the answer is C but I’m not 100% sure on that unfortunately.
User Nico Mee
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