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There are precisely eight buttons in a row. Each button shows an arrow pointing left (L) or right (R).

When you press a button, all buttons in the direction of its arrow (not including itself) rotate 180 degrees.

Determine the least number of button presses required to get from RRRRLLLL to LRLRLRLR.

(No Solution Yet, 1 Comments) Submitted on 2023-03-21 by K Sengupta    

Find all solutions of:


Assume x>y.

(No Solution Yet, 3 Comments) Submitted on 2023-03-21 by Ady TZIDON    


Hint: there is a tricky way to solve it !

(No Solution Yet, 2 Comments) Submitted on 2023-03-20 by Ady TZIDON    

Consider the given words. Move a single letter from one word to the other, in order to make a pair of synonyms, or near synonyms.
For example, given: Boast - Hip, move the 's' from 'Boast' to 'Hip' creating two respective synonyms: Boat - Ship.
  1. Send - Top
  2. Tar - Ripe
  3. Mach - Peter
  4. Lice - Reline
  5. Clean - Inline

(Solution Posted, 1 Comments) Submitted on 2023-03-20 by K Sengupta    

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