Question

5. If A = {letters of word INTEGRITY} and B = {letters of word RECKONING), find
(i) AUB
(ii) An B
(iii) A-B
(iv) B-A
Also verify that:
(a) n(A U B) = n(A) + n(B) – n(An B)
(b) n(A - B) = n(A U B) – n(B) = n(A) = n(A n B)
(C) n(B - A) = n(A U B) – n(A) = n(B) - n(A n B)
(d) n(A U B) = n(A - B) + n(B - A) + n(A n B).
plz no time pass or i will report​

Answer 1

Answer:

(iii) A-B

d) n(A U B) = n(A - B) + n(B - A) + n(A n B).