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Mathematics
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user133281
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Top posts
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86
I roll a die repeatedly until I get 6, and then count the number of 3s I got. What's my expected number of 3s?
Sep 6, 2015
48
Can a solved Sudoku game have an invalid region if all rows and columns are valid?
Jun 21, 2017
36
Lebesgue integral of a positive function on a set of positive measure
Jan 28, 2015
32
Why does this test for Fibonacci work?
Jan 12, 2015
21
Writing integers as a product of as few elements of $\{\frac21, \frac32, \frac43, \frac54, \ldots\}$ as possible
Apr 11, 2018
20
Convergence of $\sum \frac{(2n)!}{n!n!}\frac{1}{4^n}$
Sep 29, 2014
17
Mutually exclusive countable subsets of a countable set
Oct 25, 2015
16
Can anyone help me with a graph: exponential but never reaches 1
Jun 15, 2017
14
I roll a die repeatedly until I get 6, and then count the number of 3s I got. What's my expected number of 3s?
Sep 6, 2015
13
Simple method to prove $a^3+b^3=1$ has no integer solutions if $ab\neq 0$
Mar 16, 2021
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Probability that X > Y when X ~ N(0,2) and Y ~ N(0,1)
12
Writing integers as a product of as few elements of $\{\frac21, \frac32, \frac43, \frac54, \ldots\}$ as possible