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Question

Let A={x:11x5>7x+3,xϵR} and
B={x:18x915+12x,xεR}. Find the range of set AB and represent it on the number line.
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Solution

Solving the inequation: 1 Mark each
Answer: 1 Mark
Solution on the number line: 1 Mark

11x5>7x+3 and 18x915+12x11x7x>3+5 and 18x12x15+94x>8 and 6x24x>2 and x4
So,A=x:x>2,xϵ R andB=x:x4,x ϵ R
So, AB=4,5,6,7...

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