1) The slope of the straight line parallel to the x-axis is a) = 0 b) > 0 c) < 0 d) undefined 2) 2 ∈ ⋯ a) ] 2 , 5 [ b) ] 2 , 5 ] c) {1 , 5} d) [ 1 , 5 ] 3) The slope of the straight line that passes by the ordered pairs (0 , -3) , (2 , 1) is a) 2 b) -2 c) 0 d) 3 4) The following table represent the daily wages by LE for 50 workers. Find the arithmetic mean of the distribution a) 13 b) 10 c) 25 d) 13 5) [ -2 , 5 ] ∪ ] 4 , 6 ] = a) [ -2 , 6 ] b) ] -2 , 6 ] c) [ -2 , 6 [ d) ] -2 , 6 [ 6) If ( a , 2a) satisfied the equation 2X + 3Y = 24 then a = . a) 2 b) -3 c) -2 d) 3 7) The mean of values 4 , 7 , 12 , 13 , 8 , 10 is a) 6 b) 8 c) 9 d) 12 8) 4 cm , 7 cm and 5 cm are dimensions of cuboid then its volume = a) 28 b) 140 c) 35 9) Who is the best Mr. Math? a) Omar adel  b) Omar adel. c) Omar Adel d) Omar adel e) Omar adel... f) Omar adel.. 10) If the ordered paired (-1 , 1) satisfies the relation -x + By =10 then B =... a) 9 b) 11 c) 1 d) -1 11) Is the point ( 8 , 1) ∈ the straight line AB where A (-1 ,3) , B (2 , 5) a) t b) f 12) If x = [ -7 , 3 ] , y = [-3 , ∞[ then x-y = [-7 ,-3] and x∩ y= [ -3 , 3] a) t b) f 13) If a point moves on a straight line from the location A(x1 ,y1) to location B(x2 , y2) where x2 > x1 , y2 > y1 then the slope of the straight line is a) > 0 b) < 0 c) = 0 d) undefined 14) The slope of the straight line parallel to the y-axis is a) = 0 b) > 0 c) < 0 d) undefined 15) A=]-∞ , 3[ , B = [-1 ,5] then A∪B =]-∞ , 5] and A∩B = [-1 , 3] a) t b) f 16) If the lower limit of a set is 4 and its center is 6 then the upper limit of this set is.... a) 5 b) 8 c) 2 d) 4 17) The volume of a sphere whose diameter length is 6 cm is equal….. cm^3 a) 288 b) 288π c) 36π d) 12π 18) which of the following relations is a relation that illustrated the table a) y = x +7 b) y = x - 7 c) y = 3x + 1 d) y = x + 1

Maths Competition 

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