Probability problem Watch

igloobear
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I was wondering if someone could help me with this question. I am really not sure how I am supposed to do it.

You have three identical pieces of paper.
You write the letter A on one piece of paper, the letter B on another
piece of paper and the letter C on the last piece of paper.
You fold the three pieces of paper twice, thus hiding the three letters.
You also have three envelopes, marked A, B and C.
You randomly put the folded pieces of paper into the envelopes, only
one in each of the three envelopes.
Let X be the number of folded pieces of paper which end up in the
envelope with the same letter.
Calculate the expected value of X.
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