Sets, Relations and Functions - Arithmetic Aptitude Questions and Answers

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Let A = {x: x is a digit in the number 3591}, B = {x: x ? N, x<10}. Which of the following is false?

A? B = {1,3,5,9}

A-B = {2,4,6,7,8}

A U B = {1,2,3,4,5,6,7,8,9}

none of these

Answer : Option B

Explanation :

A-B = {2,4,6,7,8}

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