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GRE Math: Common Errors

Subjects : gre, math
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What is the 'union' of A and B?






2. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






3. P and r are factors of 100. What is greater - pr or 100?






4. 70 < all primes< 80






5. What is the order of operations?






6. What is a major arc?

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7. Solve the quadratic equation ax^2 + bx + c= 0






8. Max and Min lengths for a side of a triangle?






9. 1/6 in percent?






10. What is the side length of an equilateral triangle with altitude 6?






11. What transformation occurs if point C is reflected over the x-axis and then the y-axis?






12. Formula for the area of a sector of a circle?






13. A company places a 6-symbol code on each product. The code consists of the letter T - followed by 3 numerical digits - and then 2 consonants (Y is a conson). How many codes are possible?






14. 6w^2 - w - 15 = 0






15. Describe the relationship between the graphs of x^2 and (1/2)x^2






16. How many 3-digit positive integers are even and do not contain the digit 4?






17. For what values should the domain be restricted for the function f(x) = sqrt(x + 8)






18. To convert a decimal to a percent...






19. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?






20. What is the set of elements which can be found in either A or B?






21. What is the graph of f(x) shifted right c units or spaces?






22. What is the ratio of the sides of a 30-60-90 triangle?






23. In a triangle inscribed inside a circle - where the diameter is one side of the triangle - which angle is largest?






24. Volume for a cylinder?






25. What is the name for a grouping of the members within a set based on a shared characteristic?






26. What is the maximum value for the function g(x) = (-2x^2) -1?






27. What is the 'domain' of a function?






28. If the two sides of a triangle are unequal then the longer side...






29. The objects in a set are called two names:






30. 25^(1/2) or sqrt. 25 =






31. Can the output value of a function have more than one input value?






32. Formula to find a circle'S circumference from its diameter?






33. Legs 5 - 12. Hypotenuse?






34. 413.03 x 10^(-4) =






35. Evaluate and write as a mixed number: 2/7 - 3/21 + 2 & 4/14






36. Which quadrant is the upper left hand?






37. Order of quadrants:






38. a^2 - 2ab + b^2






39. Legs: 3 - 4. Hypotenuse?






40. When the 'a' in a parabola is positive....






41. What is the name of set with a number of elements which cannot be counted?






42. In similar hexagons - the ratio of the areas is 16:25. What is the ratio of their corresponding sides?






43. 10<all primes<20






44. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. How many different people can get the three prizes?






45. What is the surface area of a cylinder with radius 5 and height 8?






46. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






47. What is the set of elements found in both A and B?






48. When does a function automatically have a restricted domain (2)?






49. Which quadrant is the upper right hand?






50. What is a tangent?







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