1) { 2, 7 } - [ 2 , 7] = ............... a) ] 2 , 7 [ b) {2 } c) { 3 } d) ∅ 2) If x3=729 then : √x = ...................   a) 9 b) 3 c) ±3 d) 81 3) The solution set of : 3≤ 5x-2 <8 a) [ 1 , 2 ] b) ] -1 , 3] c) { 1 , 2 } d) [ 1 , 2 [ 4) The S.S. in R of x2 + 5 = 1 is ………… a) { } b) {2} c) {± 2} d) {3 } 5) If measure one angle of isosceles triangle is 600 then the number axis of symmetrical lines of these triangle = .......... a) 1 b) 0 c) 3 d) 2 6) R ∪R- = …………….. a) R* b) R- c) R d) ∅ 7) In triangle ABC , if m (∠A ) = 1000 and AB = AC , then : m (∠ABC ) = .......0 a) 80 b) 50 c) 40 d) 60 8) In ∆ ABC , if m (∠A ) =m (∠B ) + m (∠C ) , then ∠A is ................... a) right b) acute c) obtuse d) straight 9) If AD is median in ∆ ABC , M is the point of concurrence , AD = 18cm , then AM = .........cm  a) 6 b) 9 c) 18 d) 12 10) √3+ √3 a) -3 b) √12 c) -√2 d) 3 11) The S.S. in R of x3 + 27 = 0 is ………… a) {4} b) {3} c) ∅ d) { -3 } 12) 43+43+43+43 a) 43 b) 44 c) 412 d) 163

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