Starting with COLD, change one letter at a time until you have the word WARM.
Each change leaves the other letters in their original places and must result in a common word.
What is the minimum number of steps required to achieve this change?
Starting with COLD, change one letter at a time until you have the word WARM.
Each change leaves the other letters in their original places and must result in a common word.
What is the minimum number of steps required to achieve this change?