Mathematics
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YJT
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View all questions and answers
All Questions Answers
Score Newest
answer
16
How and when to assume WLOG correctly?
Sep 10, 2020
answer
13
Probability to draw specific ball from the bag as last one
Jun 27, 2022
answer
9
What is the difference between ${3 \choose 2}$ and ${3 \choose 1}{2 \choose 1}$?
Jul 23, 2020
answer
8
Expected value of $100$ briefcases each with $1$ dollar except for one briefcase that resets your accumulated amount to zero?
Jun 25, 2022
answer
7
Three boxes with balls
Jun 30, 2020
answer
6
counting words with a condition
Aug 5, 2020
answer
6
Interesting riddle about heights
May 12, 2021
answer
6
Calculating $ \lim_{x \to 0} (\frac{x\cdot\sin{x}}{|x|}) $
Aug 7, 2020
answer
5
In how many ways can a team of $4$ boys and $4$ girls be selected out of $6$ boys and $5$ girls if a particular boy and girl refuse to work together?
Sep 3, 2020
answer
5
If $E(Y\mid X) = a + bX$, what is $E(XY)$?
Nov 6, 2020

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