Write the following intervals in set-builder form: (i) (–3, 0) (ii) [6, 12] (iii) (6, 12] (iv) [–23, 5)

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Afeefa Tk

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(i) {x:x ∈ R,-3 <x <0} (ii) {x: x ∈ R ,6 ≤ x ≤ 12} (iii) {x: x ∈ R, 6 < x ≤ 12} (iv) {x: x ∈ R,-23 ≤ x < 5}
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(i) -2,-1 (ii)6,7,8,9,10,11,12 (iii)7,8,9,10,11,12 (iv)-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,11,12
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(i) (–3, 0) = {x: x ∈ R, –3 < x < 0} (ii) = {x: x ∈ R, 6 ≤ x ≤ 12} (iii) (6, 12] ={x: x ∈ R, 6 < x ≤ 12} (iv) [–23, 5) = {x: x ∈ R, –23 ≤ x < 5}
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(i) (–3, 0) = {x: x ∈ R, –3 < x < 0} (ii) [6, 12] = {x: x ∈ R, 6 ≤ x ≤ 12} (iii) (6, 12] ={x: x ∈ R, 6 < x ≤ 12} (iv) [–23, 5) = {x: x ∈ R, –23 ≤ x < 5} read less
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How many elements has P(A), if A = Φ?
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