If `S=R,A={x:-3lexlt7} and B={x:0ltxlt10}`, the number of positive int – InterviewSolution

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1.	If `S=R,A={x:-3lexlt7} and B={x:0ltxlt10}`, the number of positive integers in `ADeltaB` is
Answer» Correct Answer - 3 Here, `A=[-3,7),B=(0,10)` `S=(-oo,oo)` `therefore A-B=[-3,0]andB-A=[7,10)` `therefore ADeltaB=(A-B)uu(B-A)=[-3,0]uu[7,10)` `therefore` Positive integers are 7, 8, 9. Number of positive integers = 3

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