The Amazing Restin is a psychic. She can figure out anything anybody is thinking, as long as she is lying down. She gives performances all over the country. One of her favorite gimmicks features words: Her assistant thinks of a five-letter word. Then the Amazing Restin proceeds to guess five-letter words, and her assistant tells her how many letters the word he thought of shares with the word she guessed. One day, she guessed five words and he told her that each of her words shared exactly two letters with the word he had in mind. Here are the five words she guessed:
What word did the assistant have in mind?
I know that this was already solved on yahoo answers but how did they exclude b, o , and u when trying to find the answer because these letters were common between two words?
Please explain how to solve this problem.
Please provide a link to the solution you have already viewed so we can see which step you're talking about.