Q1 If |x+2|<=9 then solution set is Q2 If( 3x-5)<(x+7) then solution set is , where x is a natural number Q3 If X ={(4^n) -3n-1 :n is a natural number } and Y={ 9(n-1):n is a natural number ,then XUY is equal to
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l dont, no that thus answer 42 l99
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