Discrete Structure (DS) MCQs | Page - 7

Q. 61) Inference rules maintain

Q. 62) A validity-maintaining procedure for deriving sentences in logic from other sentences is a

Q. 63) If A and B be sets and AC and Bc denote the complements of the sets A and B, then set (A — B) ∪ (B — A) ∪ (A ∩ B) is equal to

Q. 64) Number of proper subsets of a set of order three

Q. 65) If A be a finite set of size n, then number of elements in the power set of A x A is

Q. 66) Which of the following set (s) are empty ?

Q. 67) n a Venn diagram , the overlap between two circles represents:

Q. 68) Which of these subsets are equal: A = {r.t.s} B = {s,t,r,s} C = {t,s,t,r} D = {s,r,s,t}

Q. 69) Determine the total number of subsets of the following set: {h,i, j, k, l, m, n}

Q. 70) If B is a Boolean Algebra, then which of the following is true