A firm employs 3750 people.

One person is chosen at random. What is the probability that the persons birthday is on a Monday in the year 2008. Write the answer as a decimal to two d.p.

Answer in book = 0.14

Attempt ONE

There are 52 Monday's in 1 year so I did 52/3750 = 0.014 WRONG ANSWER

Many attempts later

Thinking that there are 52 Monday's in 365 days I did 52/365 = 0.14 because this is the probability of there being a Monday in 1 year. CORRECT ANSWER

BUT I'm not happy. I just got the answer by not really knowing what I'm doing. Why did I not need to use the 3750 people value?

What happens if the question asked about the probability of TWO people's birthday being on a Monday?

Would the answer be (52/365)×(52/365) = 0.02?

Please help. Thank you

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