Hello,
B = {x:x is an integer, -1/2<x<9/2}
As we know that -1/2 = -0.5 and 9/2= 4.5
The Integer greater than -0.5 is 0 and Integer lesser than 4.5 is 4
So, x ( integer) = 0,1,2,3,4
Therefore, the elements are B = {0,1,2,3,4}
Hope it helps
Feel free to ask if you have any questions
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