If A = {4, 7, 10, 13, 16, 19, 22} B = {5, 9, 13, 17, 20} C = {3, 5, 7, 9, 11, 13, 15, 17} D = {6, 11, 16, 21} then find:




(a) A - C

(b) D - A

(c) D - B

(d) A - D

(e) B - C

(f) C - D

(g) B - A

(h) B - D

(i) D - C

(j) A - B

(k) C - B

(l) C - A


Answer
(a) {4, 10, 16, 19, 22}
(b) {6, 11, 21}
(c) {6, 11, 16, 21}
(d) {4, 7, 10, 13, 19, 22}
(e) {20}
(f) {3, 5, 7, 9, 13, 15, 17}
(g) {5, 19, 17, 20}
(h) {5, 9, 13, 17, 20}
(i) {6, 16, 21}
(j) {4, 7, 10, 16, 19, 22}
(k) {3, 7, 11, 15}
(l) {3, 5, 9 11, 15, 17}
​