Problem 2193. Mysterious digits operation (easy)

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

Solution Comments

Problem Recent Solvers305

Suggested Problems

• QWERTY coordinates

  2319 Solvers

• Weighted average

  6692 Solvers

• Proper Factors

  700 Solvers

• First non-zero element in each column

  914 Solvers

• Beginner's Problem - Squaring

  812 Solvers

More from this Author43

• Narcissistic number ?

  337 Solvers

• BLOCK x3 (Version 4)

  5 Solvers

• Generalised Hamming Number

  336 Solvers

• Permute diagonal and antidiagonal

  482 Solvers

• Find my secret number

  16 Solvers