Q. 94.0( 6 Votes )

Let A = {x : x =

Answer :

A = {x : x = 6n n N)


As x = 6n hence for n = 1, 2, 3, 4, 5, 6… x = 6, 12, 18, 24, 30, 36…


Hence A = {6, 12, 18, 24, 30, 36…}


B = {x : x = 9n n N)


As x = 9n hence for n = 1, 2, 3, 4… x = 9, 18, 27, 36…


Hence B = {9, 18, 27, 36…}


A B means common elements to both sets


The common elements are 18, 36, 54, …


Hence A B = {18, 36, 54, …}


All the elements are multiple of 18


Hence A B = {x: x = 18n n N}


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