We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. Algorithms
  3. Dynamic Programming
  4. Lucky Numbers
  5. Discussions

Lucky Numbers

  • vikasandnet
     + 6 comments

    why 23 in between 21 and 25 is not lucky number,

    as we are getting digit sum 5, and sum of square of digits are 13.