5. Let X, Y, Z represent the set of words 'KATHMANDU, 'AMERICA' and 'CHINA' respectively. a) Write the elements of X, Y and Z in the listing form. b) Which set has maximum number of elements? Give reason. c) Why don't we repeat the same letter while we write in the listing form? Give reasons. d) Identify the overlapping sets and disjoint sets by drawing a Venn-diagram. ​