Tham khảo tài liệu 'quantitative comparisons practice phần 5', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Write all the combinations 1 1 even 0 0 even 0 1 odd 1 0 odd The probability for an even sum and an odd sum is 1 2. 36. A The sum of all the natural numbers from 1 to 40 inclusive B 810 The best answer is A. Use the arithmetic progression formula. The sum is 40 X 40 20 X 41 820 which is greater than column B. 37. A 27 B The number of germs at 17 30 AI A germ multiplies it self every round hour. 3 germs were placed in a small plate at 14 30. The best answer is A. At 14 30 there were 3 germs. At 15 00 there were 6 germs. At 16 00 there were 12 germs. At 17 there were 24 germs which is smaller than 27. Geometry 38. Y The height of the triangle to side X The height of the triangle to side Y AI The areas of the triangles are equal Y X The best answer is B. X hA The area of the triangle in column A is A . Y h The area of the triangle in column B is 2 . Compare the two areas X hA Y hB. Now since X Y the height of the triangle in column A is smaller than that in column B. 39. A 5 40 40 5 40 40 C B A BC B 5 The best answer is A. The sum of the angles in the triangle is 180 and therefore the measurement of the angle BAC is 180 - 40 - 40 100 degrees . The side in front of the angle 100 is the largest and therefore BC is larger than 5. 40. Ỉ a A A ộ a A a a B A 90 degrees B a Ộ AI AB is a straight line The best answer is C. Since AB is a straight line the sum of the angles upon him equals to 180 and thus we can write the following equation 2a 2Ộ 180 a Ộ 90. 41. A The difference between the lengths of the large side to the short one B The length of the short side AI The sum of two long sides in a rectangle is 4 times bigger than the short side in the same rectangle. The best answer is C. Name the long side X and the short side Y. From the additional data we can write 2X 4Y X 2Y. Column A X - Y Y. Column B Y and therefore the two columns are equal. 42. A 180 degrees B a p Y 8 The best answer is B. All the angles in the drawing are vertices angles to the quadrilateral in the .
