Question

B={A,S,I} do the rule method
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Answer 1

Answer:

In this rule method, the element of the set is described by using a symbol 'x' or any other variable followed by a colon ':' and then we write the property possessed by the elements of the set and enclose the whole description in braces '()'. Here 'colon' stands for 'such that' and braces stand for 'set of all'.