Problems

Tasks may be completed in any order.
Already-solved problems are at the bottom of the table.

Categories:

Statistics Geometry Music Physics Puzzle

all tags

Id	Type	Title	Solved	Gravitas
1	Computing	Addition	14	1.00
2	Statistics	Mean, Median, and Mode	9	1.70
3	Statistics	Mean, Median, and Mode II	5	2.59
4	Computing	Addition II	3	3.30
5	Computing	Multiplication	3	3.30
6	Computing	Division	2	3.80
7	Computing	Compound Interest	2	3.80
8	Computing	Compound Interest II	1	4.50
9	Computing	Square Roots	2	3.80
10	Statistics	Standard Deviation	4	2.91
11	Statistics	Combinations and Permutations	2	3.80
12	Statistics	Permutations with Repeating Elements	2	3.80
13	Statistics	Control Limits	2	3.80
14	Statistics	Linear Regression	-	5.70
15	Geometry	Trapezoidal Rule	2	3.80
16	Statistics	The Bell Curve	1	4.50
17	Computing	Logarithms	2	3.80
18	Computing	Arbitrary Base Logarithms	2	3.80
19	Computing	Natural Logarithms	-	5.70
20	Computing	Trigonometric Functions	1	4.50
21	Computing	Linear Congruential Generator	-	5.70
22	Simulation	Shuffling	-	5.70
23	Geometry	Polar Coordinates	2	3.80
24	Geometry	Cylindrical Coordinates	2	3.80
25	Geometry	Spherical Coordinates	2	3.80
26	Geometry	Scalar Projection	2	3.80
27	Geometry	Parabolas	2	3.80
28	Geometry	Parabolic Osculating Circles	2	3.80
29	Geometry	Ellipses	1	4.50
30	Geometry	Henge Finder	1	4.50
31	Geometry	Metro Loops	1	4.50
32	Geometry	A Heron's Journey	2	3.80
33	Geometry	The Lake Voyage	1	4.50
34	Geometry	Ant Colonies	1	4.50
35	Geometry	Blocked View	1	4.50
36	Geometry	Flat Belts	1	4.50
37	Geometry	A Fence and Four Boulders	1	4.50
38	Geometry	Highway Access	1	4.50
39	Geometry	Beltways	1	4.50
40	Geometry	Bike Paths	1	4.50
41	Geometry	Maglev Loops	-	5.70
42	Geometry	Railway Access	-	5.70
43	Geometry	Casino City Highway Access	-	5.70
44	Geometry	Intersecting Circles of Common Radii	1	4.50
45	Geometry	Intersecting Circles of Different Radii	1	4.50
46	Geometry	3 Points on a Plane	1	4.50
47	Geometry	Intersecting Spheres of Common Radii	1	4.50
48	Geometry	Intersecting Spheres of Different Radii	1	4.50
49	Geometry	Methane Identification	2	3.80
50	Geometry	Methane Rotation	1	4.50
51	Geometry	Methane Normalization	-	5.70
52	Geometry	Tetrahedral Shadows	1	4.50
53	Geometry	Min and Max Regular Tetrahedral Shadows	1	4.50
54	Geometry	Min and Max Irregular Tetrahedral Shadows	-	5.70
55	Geometry	Caber Tossing in the Garden	-	5.70
56	Geometry	Coaxial Cable Bundling	1	4.50
57	Geometry	Off-Axis Cable Bundling	-	5.70
58	Geometry	Clock Triangles	1	4.50
59	Geometry	Clock Triangles II	-	5.70
60	Geometry	Clock Triangles III	-	5.70
61	Geometry	Pixel Circles	1	4.50
62	Music	Musical Notes and Intervals	1	4.50
63	Music	Scales and the Circle of Fifths	1	4.50
64	Music	Chords and Inversions	1	4.50
65	Music	Equal Temperament	1	4.50
66	Music	Pythagorean Tuning	1	4.50
67	Music	Fine Tuning	1	4.50
68	Music	Vibrating Strings	1	4.50
69	Physics	Freefall Time	1	4.50
70	Physics	Freefall Distance	1	4.50
71	Physics	Upward Toss	1	4.50
72	Physics	Projectile Motion	1	4.50
73	Physics	Drag Force	-	5.70
74	Physics	Terminal Velocity	1	4.50
75	Physics	Universal Gravitation	1	4.50
76	Physics	Elastic Collisions	1	4.50
77	Physics	Billiard Ball Collisions	1	4.50
78	Physics	Many Billiard Ball Collisions	-	5.70
79	Physics	Torque	1	4.50
80	Physics	Maximum Book Overhang	1	4.50
81	Physics	Maximum Encyclopedia Overhang	1	4.50
82	Physics	Heat Flow	1	4.50
83	Engineering	Heat Flow through Dissimilar Materials	1	4.50
84	Engineering	Differential Manometers	2	3.80
85	Engineering	Pressurized Fluid Flow	1	4.50
86	Calculus	Approximating Slope	1	4.50
87	Calculus	Polynomial Derivatives	1	4.50
88	Computing	24-Bit Bitmaps	1	4.50
89	Calculus	Product Rule and Trigonometric Derivatives	1	4.50
90	Computing	Binary Numbers	2	3.80
91	Computing	Hexadecimal Numbers	1	4.50
92	Computing	Arbitrary Bases	1	4.50
93	Computing	Binary Fractions	1	4.50
94	Computing	Arbitrary Base Fractions	-	5.70
95	Computing	Negative Bases	1	4.50
96	Computing	Arbitrary Base88	1	4.50
97	Instructional	Kaprekar's Constant	1	4.50
98	Puzzle	Kaprekar's Conflux	1	4.50
99	Instructional	Elo Ratings	1	4.50
100	Biology	Half-Life	1	4.50
101	Puzzle	Blood Type	1	4.50
102	Puzzle	Expected Number of Random Moves	1	4.50
103	Puzzle	Expected Number of Random Moves II	-	5.70
104	Puzzle	The Magic Orchard	1	4.50
105	Puzzle	Wormholes of Cygnus	1	4.50
106	Puzzle	The Deranged Goats	2	3.80
107	Puzzle	A Deranged Gamble	-	5.70
108	Puzzle	Everyday Problems	1	4.50
109	Puzzle	Four Cardboard Boxes	1	4.50
110	Puzzle	Order Reconstruction	1	4.50
111	Puzzle	Mabinogion Sheep	-	5.70
112	Puzzle	Gachapon Collector	1	4.50
113	Puzzle	Gachapon Collector II	1	4.50
114	Puzzle	Gachapon Collector III	-	5.70
115	Puzzle	Subdividing Farmplots	-	5.70
116	Puzzle	Circular Subdivisions	1	4.50
117	Puzzle	Desert Escape	2	3.80
118	Puzzle	Double or Add	1	4.50
119	Puzzle	Multiply or Add	1	4.50
120	Puzzle	Double or Add Possibilities	1	4.50
121	Puzzle	Multiply or Add Possibilities	-	5.70
122	Puzzle	Rhombic Tiling	1	4.50
123	Puzzle	Rhombic Tiling Fixing	-	5.70
124	Puzzle	Unique Birdwatching	1	4.50
125	Puzzle	Unique Birdwatching II	-	5.70
126	Puzzle	Quest for the Jewel	1	4.50
127	Puzzle	Quest for the Jewel II	-	5.70
128	Puzzle	Fully Hidden Buildings	1	4.50
129	Puzzle	Microphone Placement	-	5.70
130	Puzzle	Fire Beacon Network	-	5.70
131	Puzzle	Minimum Knight Path	-	5.70
132	Puzzle	Knight Range	-	5.70
133	Puzzle	3d Knight Range	-	5.70
134	Simulation	War	1	4.50
135	Simulation	The Great Debate	-	5.70
136	Simulation	Conway's Game of Life	1	4.50
137	Simulation	Conway's Hexagonal Game of Life	1	4.50
138	Simulation	Conway's 3D Game of Life	1	4.50
139	Simulation	Langton's Ants	1	4.50
140	Simulation	Paterson's Worms	-	5.70
141	Simulation	Recamán's Sequence	1	4.50
142	Logic	NAND	1	4.50
143	Logic	NOT	1	4.50
144	Logic	RCA_4B	-	5.70
145	Logic	AND	1	4.50
146	Logic	SRFF	-	5.70
147	Logic	OR	1	4.50
148	Logic	TFF	-	5.70
149	Logic	XOR	1	4.50
150	Logic	NOR and XNOR	1	4.50
151	Logic	MUX	1	4.50
152	Logic	DEMUX	1	4.50
153	Logic	4-Bit Width Logic	-	5.70
154	Logic	Half-Adder	-	5.70
155	Logic	Full-Adder	-	5.70
156	Logic	DFF	-	5.70
157	Logic	Pulse Counter	-	5.70