Problem 2193. Mysterious digits operation (easy)

 0    -> 0
 1    -> 9
 121  -> 9
 44   -> 6
 15   -> 5
 1243 -> 7
 ...

Solution Comments

Problem Recent Solvers301

Suggested Problems

• Find the longest sequence of 1's in a binary sequence.

  6508 Solvers

• Counting Money

  3740 Solvers

• Encode Roman Numerals

  1986 Solvers

• surface of a spherical planet

  979 Solvers

• Project Euler: Problem 6, Natural numbers, squares and sums.

  2365 Solvers

More from this Author43

• Magic is simple (for beginners)

  10360 Solvers

• Decrypt the cypher using XOR encryption (for beginners)

  58 Solvers

• BLOCK x3 (Version 1)

  8 Solvers

• Expression or variable?

  22 Solvers

• Find Missing Number

  67 Solvers