Sets, Relations and Functions - Arithmetic Aptitude Questions and Answers

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If A = {(x, y) : x2 + y2 = 1; x, y ? R} and B = {(x, y): x2 + y2 = 4; x, y ?R} then

A ? B = ?

A ? B ? f

A ? B = ?

B ?A = B

Answer : Option A

Explanation :

A ? B = ?

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