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Dan's Problem Archives Index
 
Probs & answers . 1-10 . 11-20 . 21-30 . 31-40 . 41-50 . 51-60 . 61-70 . 71-80 . 81-90
Problems only . . 1-10 . 11-20 . 21-30 . 31-40 . 41-50 . 51-60 . 61-70 . 71-80 . 81-90
 
Probs & answers. . . 91-100 . 101-110 . 111-120 . 121-130 . 131-140 . 141-150 . 151+
Problems only . . . . 91-100 . 101-110 . 111-120 . 121-130 . 131-140 . 141-150 . 151+
 
 
or click on a title below to go to that problem in the
+ Complete Problem List +
Warning: These contain ANSWERS. For problems only,
read the title below and click on the 'Problems Only' number above.
 
1- The Most Divisors
2 - Trains versus fly!
3 - Unit fractions 1/n
4 - The Census Taker
5 - Square root probs
6- Buying house nos.
7 - Name that pattern
8 - Clink wine glasses
9 - Strange Powers !!
10- Odd & Abundant?
 
11 -Impossible Twins?
12 -The ABC's of Cars
13 - Spider and the Fly
14:Intersecting Bubbles
15 -The Right Numbers
16 -The Magic Number
17 - How Many Ants ?
18-What Time Was It?
19 - World Cup Soccer
20:The Average Speed?
 
 21:Men and/or Women
22 -How Much Space?
23-Fermat's First Thm
24:That's Sum Product
25 - To Seven-Eleven?
26-The Two Elephants
27 - How Many Tiles?
28 - Where On Earth?
29 - Fridays the 13 th
30 -Turk-o-nacci Nos.
 
31 - Paint My House!
32 - Squares in a Box
33 - Disk- o -Mania !
34 Party like it's 1999
35 - Fifth Half Asleep
36- Under Salary Cap
37 - Bad Cancelling !
38 - Same Birthday ?
39 - - Holy Triangle !
40 -- More on Twins

 

41- Car AND Train!
42 - Co-Perfect Nos.
43 -"Divisorly" Nos.
44 - The Lying Truth
45 - Not Sold at 7-11
46: Round the Corner
47 - Roll That Prime!
48 - Cut The Cheese!
49 - Not So Peachy!
50 - Bouncing Ball...

 

51- The Age-Old Lie
52- - Determine - It !
53 - Chickens'n'Eggs
54-The Three Boards
55 - The Millionaire!
56- Subtrac.Diamond
57 - Close to the Line
58 - - Y 2 Digits - - ?
59 - - Bicycle Shorts!
60 Odd Combinat'ns

 

61 - The Right Sticks
62 - Eat Lots of Fruit
63 - Sqrs into Primes
64 A Prime Complex
65 - - Goat or Sheep ?
66 - Holiday Cookies
67 - Into 2 Thousand!
68 -- Powerful Digits
69 -- The Do-It-Alls!
70 - "Can" Be Done!

 

71- Reciprocal Sums
72- Valentines 4 All!
73 - Divisible Dates?
74 - Four Centuries !
75 - Work/Study Pts.
76 - The Triple Kiss!
77- Polynomial Road
78-RunForYourLife!
79- Open+Shut Case
80-Try Our Products

 

81 Change 4A Dollar
82 - - Solve Or Die !
83:The Tree Amigos
84 Crazy Ma'ticians?
85 - - Total-ly Equal!
86- Number of Clues
87: 2 Balls and a Box
88- A Growing Road
89-Gear's The Thing
90 - Cross Numbers

 

91- A Sinking Storm
92 - Tiling Me Softly
93- One for the Ages
94 - Hole In The Ball
95 - Above Avg. Art
96 - Missing Dollar ?
 97-Three Funny Nos.
98 - The Dinner Date
99 - Birds on the Run
100 - Parents To Bee?

 

101 -- The Fab Five !
102 - Similar but Diff
103 - Weird Numbers
104 Dan's Prime Code
105- Ez Come, Ez Go
106- New Year Phone
107- Geometry Gems
108 - Cover The Cube
109- Based On What?
110 - Family Of Four

 

111 -- Wedding Cake
112 - Hands On Time
113 - The Two Cubes
114 - Price of Stamps
115 - Thinking Caps!
116 -- Hoop It Up ! !
117 - Kissing Circles
118 -Cubes & Squares
119 Better than Perfect
120 -- Rotating Tires!

 

121 -- Gear Numbers
122 Power 2b Diffrnt
123 -- Tour de Ants !
124 Lattice Midpoint
125- Goats for Sheep
126 -- Longest Train!
127- Hex Floor Tiles
128 - Two or 3 Kids?
129 Grand Exponents
130 - Triang-U-Later!

 

131 - Back at the 7-11
132 - - The Top Five !
133 -- Walk, Eat, Bike
134 A Peachy Quintet
135 - Reciprocal Pairs
136 How Lo CanUGo
137 -- 2000 Shuffles !
138 The Twelve Coins
139 - A Funny Inverse
140 Swimr Loses Cap

 

141 Where's the Road
142 - - Strike A Chord
143- Easy as A-B-C-D
144 - - - Click to 222 !
145 - Up The Volume!
146 - Maxes & Means
147 - Circle the Roots!
148 - - Weird Bases !!
149 - Indep'd'ce Events
150 Hpy Bday Hermen
 
151 Friends, Wives, $
152 Nearly Isosceles?
153- Sharon & Karen
154 - Swim 2D Boat !
   
 
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Deadline for Problem #155 is Tuesday, Oct 15, 2002
 
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