A letter is to be randomly picked from the word Mississippi. Which set of letters have equal chances to be selected? Would it be the S and the I? Or the M, I, and the p? Or the m and the I? Or the M and the p?

The set of letters with equal chances to be selected would be the M, I, and the p. This is because there are 4 S's, 4 I's, 4 P's, and 1 M in the word Mississippi, so the probability of selecting each of these letters is the same.