A. {x\8≥x≥4} B. {x\8≥x>4} C. {x\8≤x≤4} D. {x\8≤x<4} E.Non of these 7.If P=[2,7) and Q=(3,7], then P∩Q =……….. A.(3,7] B.(2,7] C.(3,7) D.[2,7] E.(4,7) 8.Let S=R if A={x\x<a},B={x\x>a} then (A∪B)´