1. Let S = {a, b, c, d, e, f} find:

(a) The set that consists of all 0-element subsets of S;

(b) The set that consists of all 1-element subsets of S;

(c) The set that consists of all 2-element subsets of S;

(d) The set that consists of all 3-element subsets of S;

(e) The set that consists of all 4-element subsets of S;

(f) The set that consists of all 5-element subsets of S;

(g) The set that consists of all 6-element subsets of S;

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