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1
Combinatorics  How many unique ways to put marbles on vertices by Mark BattenCarew12

Help Me !  8  Today 18:19:46 by anonimnystefy 
2 
Help Me !  1  Today 18:00:54 by bobbym 
3 
Ganesh's Puzzles  2,887  Today 15:01:04 by bobbym 
4
liner equation need to be solved ! by Khird

Help Me !  7  Today 14:54:36 by bobbym 
5 
Puzzles and Games  166  Today 14:45:58 by bobbym 
6 
Help Me !  1,534  Today 08:24:19 by bob bundy 
7
The circumference vs. area of a circle. by EbenezerSon

Help Me !  19  Today 07:10:15 by bob bundy 
8 
Ganesh's Puzzles  5,113  Today 01:05:02 by bobbym 
9 
Ganesh's Puzzles  4,348  Today 00:49:02 by bobbym 
10 
Puzzles and Games  1,501  Today 00:01:50 by bobbym 
11
Tests of Divisibility Simple tricks by burgess

This is Cool  2  Yesterday 23:47:52 by burgess 
12
Did you know this about any NonPrime? by Primenumbers

This is Cool  7  Yesterday 22:47:48 by Primenumbers 