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.
x^2-4=sqrt(x+4)
Hint: there is a tricky way to solve it !
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.
- Send - Top
- Tar - Ripe
- Mach - Peter
- Lice - Reline
- Clean - Inline
