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#	Title	Tags	Rating	Solved
38	Cryptography 5	probabilitystatisticscalculuscryptography	1200	0
37	Cryptography 4	probabilitystatisticscryptography	2800	0
36	Cryptography 3	probabilitystatisticscryptography	1800	1
35	Cryptography 2	probabilitystatisticscryptography	2000	0
34	Cryptography 1	probabilitystatisticscryptography	1200	2
32	The Largest Cylinder	calculusgeometry	800	5
31	The Chess Computer?	discrete mathematicsboolean algebra	2800	0
30	Volume of the Simplex	higher-dimensional geometrylinear algebraalgebramultivariable calculus	1600	0
29	Euler's Relation	geometrygraph theorytopology	1200	0
28	The Many Faces of the n-simplex	higher-dimensional geometrydiscrete mathematicscombinatorics	1400	0
27	Projection and Cross-Section	geometryvector geometrymathematical analysis	1600	0
26	The Shadown of the n-cube	higher-dimensional geometrylinear algebraalgebramultivariable calculus	1600	0
25	The Shadow of the Cube	geometryvector geometry	1200	0
24	The Tesseract and beyond	higher-dimensional geometrydiscrete mathematicsgraph theorycombinatorics	2000	0
23	The Inter-dimensional Reccurence	higher-dimensional geometrycalculussequences and seriesmathematical analysisrecurrence relations	1400	0
22	Bound the Box?	higher-dimensional geometrylinear algebraalgebra	1400	0
21	Bound the Box	geometry	800	0
20	Orthonormal Basis from Scratch	linear algebraalgebravector geometry	1000	0
19	Hyperlining	higher-dimensional geometrylinear algebraalgebramathematical analysisvector geometry	1200	0
18	Uniqueness of a Point	linear algebraalgebra	1000	0
17	The Foot	geometry	800	5
16	The Reckoning of a Recurrence	discrete mathematicsnumber theoryrecurrence relationssequences and series	1600	4
15	The Prisoner's Choice	game theoryprobabilitydiscrete mathematics	2000	0
14	Division Bell	number theorymodular arithmetic	1600	1
13	How to write a number	number theorymodular arithmeticdiophantine equations	2400	0
12	The Divisibility of the Difference of Powers	number theorymodular arithmeticdiscrete mathematics	1200	2
11	To Cross any Round Obstacle	geometrycalculus	1600	2
10	To Cross a Round Obstacle	geometrycalculus	1200	4
9	A General Random Walk	probabilitydiscrete mathematicshigher-dimensional geometry	2200	0
8	Another Random Walk	probabilitydiscrete mathematics	800	0
7	A Random Walk	probabilitydiscrete mathematics	800	3
6	Balls in a cube	mathematical analysishigher-dimensional geometry	1400	0
5	Surface Area of an n-dimensional ball	calculusmathematical analysishigher-dimensional geometry	2000	0
4	Volume of an n-dimensional ball	calculusmathematical analysishigher-dimensional geometry	2000	0
3	Euler's Formula from cosh(t)	complex numberstaylor serieshyperbolic functionsexponential functions	1200	5
2	Derivation of the Depressed Cubic formula	polynomial equationsalegbra	1400	2
1	Sum of cubes of 'n' integers.	sequences and seriesalgebrasummation	800	10