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Of 100 staff members of a school, 48 drink coffee, 25 drink both tea and coffee and everyone drinks either coffee or tea. How many stuff members drink tea?
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Of 100 students, 65 are members of mathematics club and 40 are members of a physics club. If 10 are members of neither club, then how many students are members of both clubs?
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Let A and B be two sets that contain 15 and 17 elements respectively. If A ∩ B contains 10 elements, what is the number of elements in A ∪ B?
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Suppose A and B are sets such that n(A) = 10, n(B) = 23 and n(A∩B) = 4, then which of the following is equal to n(A∆B)?
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Which one of the following statement is true about the graph of f(x)= x² -5x -24?
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If f(x) = x² +px + 1 where f(0) and f(1) have opposite signs so that f has a root in (0,1), then which one of the following number is a possible value p?
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Which of the following is the measure of an exterior angle of a 10 sided regular polygons?
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What is the distance between the given points A(3, -6) and B(1/2, √3/3)?
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If Ax+By+C = 0 and ax+by+c= 0 are perpendicular to each other. Then which one of the following is true?
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A given element has atomic number of 55 and mass number of 133. Which of the following describes correctly the property of this element?
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In modern periodic table, what is the name of the group that contains the most electronegative element?
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The election configuration of an element in the periodic table is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵. In which block does this element belong?
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Which blood vessels carry blood away from the heart?
A) Veins
B) Arteries
C) Capillaries
D) Venules
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Which one of the following statements is well justified, why the left ventricle is tough in nature? Because it
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How does oxygen is transported in the human body? It is transported
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What is the scientific reason behind the preference of high altitude areas for training by Ethiopian Athletes? Because
