Question 6
In the morning Alice, Bob and Tom arrange wooden letters as LEAVES.
On each later visit Alice removes one letter, Bob inserts one letter anywhere, or Tom replaces one letter by another. They may visit repeatedly.
By evening the word is BLUEBERRIES.
What is the minimum total number of visits after the morning meeting?
On each later visit Alice removes one letter, Bob inserts one letter anywhere, or Tom replaces one letter by another. They may visit repeatedly.
By evening the word is BLUEBERRIES.
What is the minimum total number of visits after the morning meeting?