Problem 2193. Mysterious digits operation (easy)

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

Solution Comments

Problem Recent Solvers280

Suggested Problems

• Remove all the consonants

  4059 Solvers

• Indexed Probability Table

  2445 Solvers

• Who knows the last digit of pi?

  657 Solvers

• surrounded matrix

  1187 Solvers

• Generate a vector like 1,2,2,3,3,3,4,4,4,4

  10806 Solvers

More from this Author43

• Chess performance

  59 Solvers

• Divisors for big integer

  139 Solvers

• Additive persistence

  171 Solvers

• Find my secret number

  16 Solvers

• Add more zeros

  315 Solvers