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Problems

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Difficulty
Sort by
8621
Two identical digits
Very easy
8625
Delete one digit
Very easy
8626
Two digits in a row
Very easy
8627
Sum of neighbors
Very easy
8630
Maximum digit in a number
Very easy
8631
Number of maximal digits
Very easy
8632
Number of odd digits
Very easy
8639
Append three to positive integer
Very easy
8643
Innohorse
Very easy
8653
Add subtract and multiply
Very easy
8660
Tile
Medium
8666
Cow Cotillion
Very easy
8667
Cow Treats
Very easy
8679
Divide by 3
Very easy
8680
Even neighbours
Very easy
8681
Product of nonzero digits
Very easy
8682
Remove even digits
Very easy
8684
Sum and amount
Very easy
8685
Arithmetical mean
Very easy
8687
Perimeter of triangle
Very easy
8691
Oversized Pancake Flipper
Very easy
8693
Bathroom Stalls
Medium
8694
Fashion Show
Easy
8696
Grades
Very easy
8698
Repeated numbers
Very easy
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