puzzles :: Some exercise for your brain

[abhishek]

Let S be the set of numbers from 1 to 16. Adam thinks of a number in S and memorizes it. you need to find this no. you can ask 7 questions from him. each question should have a yes or no answer he will answer corectly at least 6 of these. he may also answer all 7 correctly - we don't know.
at the end of this question answer round you have to tell the no. he memorized. give a strategy to do this.