In your last exam, Prof. Fernndez made the first three-questions to be of the form yes/no. To void having the three questions follow his 'clever', but possibly known to students, pattern, he listed the sample space resulting from creating three questions of the form yes/no. He will want all individual possibilities and will put them in a bag and will pick ask his sister to pick one piece of paper randomly.

I need the answer for a and b

a)Finish writing the sample space given below:

yyy nyy yny yyn nyn ynn

b)What is the probability that two of the three questions will have a yes answer and only one of the three questions will have a no answer?