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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+

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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