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Mathematics
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JMP
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answer
68
Mathematical symbol for 'slightly greater than'?
Mar 12, 2017
answer
40
Suppose $M$ is an $m \times n$ matrix such that all rows and columns of $M$ sum to $1$. Show that $m=n$
Sep 6, 2016
answer
21
More direct approach to a combinatorial problem
Jun 14, 2023
answer
12
Expected number of cards in original position in a shuffled deck of $52$ cards?
Jul 5, 2020
answer
12
Proving $x^2+x+1\gt0$
Jun 28, 2018
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11
How many digits does the integer zero have?
Mar 9, 2015
answer
9
Why is $\mathbb{R}-\mathbb{Q}$ an uncountable set and how can I prove it?
Jul 18, 2020
question
8
'3-point' curve
Jan 31, 2015
answer
8
probability that a sum of 3 is rolled before a sum of 5 is rolled in a sequence of rolls of the dice from a four sided die.
Nov 2, 2015
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8
Diagonal-free Sudoku grid
May 17, 2015
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When is a question 'recreational'?
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Different numbers of votes cast are shown on the activity page and on the votes tab
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Correct way to add 22 to 4 to get 82
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Make a square with matchsticks!
62
Remove my last letter and I could become lethal
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A truly amazing way of making the number 2016
48
Half filled water bottle