1) Write power set of set A={3,5,7,8}. Utilize precisely correct notation having correct placement of set brackets and commas?
ii) Write distinct elements of set {x belong to Z| xy = 36 for some y belong to Z}.?
iii) Consider set A = {6,7,9} and set B = {3,6,2,6,3,5}. Determin the value of |D x F|?
iv) What three properties should the binary relation on the set B have to be equivalence relation?