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Problems


IDDescription / Title
101
Optimum polynomial
102
Triangle containment
103
Special subset sums: optimum
104
Pandigital Fibonacci ends
105
Special subset sums: testing
106
Special subset sums: meta-testing
107
Minimal network
108
Diophantine reciprocals I
109
Darts
110
Diophantine reciprocals II
111
Primes with runs
112
Bouncy numbers
113
Non-bouncy numbers
114
Counting block combinations I
115
Counting block combinations II
116
Red, green or blue tiles
117
Red, green, and blue tiles
118
Pandigital prime sets
119
Digit power sum
120
Square remainders
121
Disc game prize fund
122
Efficient exponentiation
123
Prime square remainders
124
Ordered radicals
125
Palindromic sums
126
Cuboid layers
127
abc-hits
128
Hexagonal tile differences
129
Repunit divisibility
130
Composites with prime repunit property
131
Prime cube partnership
132
Large repunit factors
133
Repunit nonfactors
134
Prime pair connection
135
Same differences
136
Singleton difference
137
Fibonacci golden nuggets
138
Special isosceles triangles
139
Pythagorean tiles
140
Modified Fibonacci golden nuggets
141
Investigating progressive numbers, n, which are also square
142
Perfect Square Collection
143
Investigating the Torricelli point of a triangle
144
Investigating multiple reflections of a laser beam
145
How many reversible numbers are there below one-billion?
146
Investigating a Prime Pattern
147
Rectangles in cross-hatched grids
148
Exploring Pascal's triangle
149
Searching for a maximum-sum subsequence
150
Searching a triangular array for a sub-triangle having minimum-sum