Score:  680 points (ranked #109) 
Puzzles:  0 
Solutions:  18 (2 chosen as best) 
Comments:  1 
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(100 Points) (100 Points) (100 Points) (100 Points) 
Voted on:  0 puzzles, 1 solution 
Gave out:  1 up vote, 0 down votes 
Received:  8 up votes, 0 down votes 
logic  series  algebra  counting  
mathematical  tricky  probability  
number puzzle  geometry  reasoning 
