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	12	1.00
2	Statistics	Mean, Median, and Mode	7	1.84
3	Statistics	Mean, Median, and Mode II	3	3.05
4	Computing	Addition II	3	3.05
5	Computing	Multiplication	2	3.55
6	Computing	Division	2	3.55
7	Computing	Compound Interest	2	3.55
8	Computing	Compound Interest II	1	4.25
9	Computing	Square Roots	2	3.55
10	Statistics	Standard Deviation	4	2.66
11	Statistics	Combinations and Permutations	2	3.55
12	Statistics	Permutations with Repeating Elements	2	3.55
13	Statistics	Control Limits	2	3.55
14	Statistics	Linear Regression	-	5.46
15	Geometry	Trapezoidal Rule	2	3.55
16	Statistics	The Bell Curve	1	4.25
17	Computing	Logarithms	2	3.55
18	Computing	Arbitrary Base Logarithms	2	3.55
19	Computing	Natural Logarithms	-	5.46
20	Computing	Trigonometric Functions	1	4.25
21	Computing	Linear Congruential Generator	-	5.46
22	Simulation	Shuffling	-	5.46
23	Geometry	Polar Coordinates	2	3.55
24	Geometry	Cylindrical Coordinates	2	3.55
25	Geometry	Spherical Coordinates	2	3.55
26	Geometry	Scalar Projection	2	3.55
27	Geometry	Parabolas	2	3.55
28	Geometry	Parabolic Osculating Circles	2	3.55
29	Geometry	Ellipses	1	4.25
30	Geometry	Henge Finder	1	4.25
31	Geometry	Metro Loops	1	4.25
32	Geometry	A Heron's Journey	2	3.55
33	Geometry	The Lake Voyage	1	4.25
34	Geometry	Ant Colonies	1	4.25
35	Geometry	Blocked View	1	4.25
36	Geometry	Flat Belts	1	4.25
37	Geometry	A Fence and Four Boulders	1	4.25
38	Geometry	Highway Access	1	4.25
39	Geometry	Beltways	1	4.25
40	Geometry	Bike Paths	1	4.25
41	Geometry	Maglev Loops	-	5.46
42	Geometry	Railway Access	-	5.46
43	Geometry	Casino City Highway Access	-	5.46
44	Geometry	Intersecting Circles of Common Radii	1	4.25
45	Geometry	Intersecting Circles of Different Radii	1	4.25
46	Geometry	3 Points on a Plane	1	4.25
47	Geometry	Intersecting Spheres of Common Radii	1	4.25
48	Geometry	Intersecting Spheres of Different Radii	1	4.25
49	Geometry	Methane Identification	2	3.55
50	Geometry	Methane Rotation	1	4.25
51	Geometry	Methane Normalization	-	5.46
52	Geometry	Tetrahedral Shadows	1	4.25
53	Geometry	Min and Max Regular Tetrahedral Shadows	1	4.25
54	Geometry	Min and Max Irregular Tetrahedral Shadows	-	5.46
55	Geometry	Caber Tossing in the Garden	-	5.46
56	Geometry	Coaxial Cable Bundling	1	4.25
57	Geometry	Off-Axis Cable Bundling	-	5.46
58	Geometry	Clock Triangles	1	4.25
59	Geometry	Clock Triangles II	-	5.46
60	Geometry	Clock Triangles III	-	5.46
61	Geometry	Pixel Circles	1	4.25
62	Music	Musical Notes and Intervals	1	4.25
63	Music	Scales and the Circle of Fifths	1	4.25
64	Music	Chords and Inversions	1	4.25
65	Music	Equal Temperament	1	4.25
66	Music	Pythagorean Tuning	1	4.25
67	Music	Fine Tuning	1	4.25
68	Music	Vibrating Strings	1	4.25
69	Physics	Freefall Time	1	4.25
70	Physics	Freefall Distance	1	4.25
71	Physics	Upward Toss	1	4.25
72	Physics	Projectile Motion	1	4.25
73	Physics	Drag Force	-	5.46
74	Physics	Terminal Velocity	1	4.25
75	Physics	Universal Gravitation	1	4.25
76	Physics	Elastic Collisions	1	4.25
77	Physics	Billiard Ball Collisions	1	4.25
78	Physics	Many Billiard Ball Collisions	-	5.46
79	Physics	Torque	1	4.25
80	Physics	Maximum Book Overhang	1	4.25
81	Physics	Maximum Encyclopedia Overhang	1	4.25
82	Physics	Heat Flow	1	4.25
83	Unlabeled	Heat Flow through Dissimilar Materials	1	4.25
84	Engineering	Differential Manometers	2	3.55
85	Engineering	Pressurized Fluid Flow	1	4.25
86	Calculus	Approximating Slope	1	4.25
87	Calculus	Polynomial Derivatives	1	4.25
88	Computing	24-Bit Bitmaps	1	4.25
89	Calculus	Product Rule and Trigonometric Derivatives	1	4.25
90	Computing	Binary Numbers	2	3.55
91	Computing	Hexadecimal Numbers	1	4.25
92	Computing	Arbitrary Bases	1	4.25
93	Computing	Binary Fractions	1	4.25
94	Computing	Arbitrary Base Fractions	-	5.46
95	Computing	Negative Bases	1	4.25
96	Computing	Arbitrary Base88	1	4.25
97	Instructional	Kaprekar's Constant	1	4.25
98	Puzzle	Kaprekar's Conflux	1	4.25
99	Instructional	Elo Ratings	1	4.25
100	Biology	Half-Life	1	4.25
101	Puzzle	Blood Type	1	4.25
102	Puzzle	Expected Number of Random Moves	1	4.25
103	Puzzle	Expected Number of Random Moves II	-	5.46
104	Puzzle	The Magic Orchard	1	4.25
105	Puzzle	Wormholes of Cygnus	1	4.25
106	Puzzle	The Deranged Goats	2	3.55
107	Puzzle	A Deranged Gamble	-	5.46
108	Puzzle	Everyday Problems	1	4.25
109	Puzzle	Four Cardboard Boxes	1	4.25
110	Puzzle	Order Reconstruction	1	4.25
111	Puzzle	Mabinogion Sheep	-	5.46
112	Puzzle	Gachapon Collector	1	4.25
113	Puzzle	Gachapon Collector II	1	4.25
114	Puzzle	Gachapon Collector III	-	5.46
115	Puzzle	Subdividing Farmplots	-	5.46
116	Puzzle	Circular Subdivisions	1	4.25
117	Puzzle	Desert Escape	2	3.55
118	Puzzle	Double or Add	1	4.25
119	Puzzle	Multiply or Add	1	4.25
120	Puzzle	Double or Add Possibilities	1	4.25
121	Puzzle	Multiply or Add Possibilities	-	5.46
122	Puzzle	Rhombic Tiling	1	4.25
123	Puzzle	Rhombic Tiling Fixing	-	5.46
124	Puzzle	Unique Birdwatching	1	4.25
125	Puzzle	Unique Birdwatching II	-	5.46
126	Puzzle	Quest for the Jewel	1	4.25
127	Puzzle	Quest for the Jewel II	-	5.46
128	Puzzle	Fully Hidden Buildings	1	4.25
129	Puzzle	Microphone Placement I	-	5.46
130	Puzzle	Fire Beacon Network	-	5.46
131	Simulation	War	1	4.25
132	Simulation	The Great Debate	-	5.46
133	Simulation	Conway's Game of Life	1	4.25
134	Simulation	Conway's Hexagonal Game of Life	1	4.25
135	Simulation	Conway's 3D Game of Life	1	4.25
136	Simulation	Langton's Ants	1	4.25
137	Simulation	Paterson's Worms	-	5.46
138	Simulation	Recamán's Sequence	1	4.25
139	Logic	NAND	1	4.25
140	Logic	NOT	1	4.25
141	Logic	AND	1	4.25
142	Logic	OR	1	4.25
143	Logic	XOR	1	4.25
144	Logic	NOR and XNOR	1	4.25
145	Logic	MUX	1	4.25
146	Logic	DEMUX	1	4.25
147	Logic	4-Bit Width Logic	-	5.46
148	Logic	Half-Adder	-	5.46
149	Logic	Full-Adder	-	5.46
150	Logic	RCA_4B	-	5.46
151	Logic	SRFF	-	5.46
152	Logic	TFF	-	5.46
153	Logic	DFF	-	5.46
154	Logic	Pulse Counter	-	5.46