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






2. 1/2 divided by 3/7 is the same as






3. How many sides does a hexagon have?






4. (6sqrt3) x (2sqrt5) =






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






6. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?






7. When the 'a' in the parabola is negative...






8. What is the third quartile of the following data set: 44 - 58 - 63 - 63 - 68 - 70 - 82






9. Number of degrees in a triangle






10. 70 < all primes< 80






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






12. What is a chord of a circle?






13. What is a parabola?






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






15. What is the 'Solution' for a system of linear equations?






16. 8.84 / 5.2






17. If an inequality is multiplied or divided by a negative number....






18. If Madagascar'S exports totaled 1.3 billion in 2009 - and 4% came from China - what was the value in millions of the country'S exports to China?






19. Can you subtract 3sqrt4 from sqrt4?






20. (x^2)^4






21. Legs 6 - 8. Hypotenuse?






22. What percent of 40 is 22?






23. The slope of a line perpendicular to (a/b)?






24. Simplify 9^(1/2) X 4^3 X 2^(-6)?






25. Simplify the expression (p^2 - q^2)/ -5(q - p)






26. The four angles around a point measure y - 2y - 35 and 55 respectively. What is the value of y?






27. What is an exterior angle?






28. What is the ratio of the surface area of a cube with an edge of 10 to the surface area of a rectangular solid with dimensions 2 - 4 - and 6?






29. Surface area for a cylinder?






30. What is the empty set?






31. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






32. What are the integers?






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






34. A brick with dimensions 10. 15 and 25 weighs 1.5 kg. A second brick (same density) has dimensions 12 - 18 - and 30. What is the weight of the second brick?






35. a^2 - b^2 =






36. Circumference of a circle?






37. Can you add sqrt 3 and sqrt 5?






38. a^2 - b^2






39. 5/8 in percent?






40. Length of an arc of a circle?






41. Define an 'expression'.






42. If r - t - s & u are distinct - consecutive prime numbers - less than 31 - which of the following could be an average of them (4 - 4.25 - 6 - 9 - 24 - 22 - 24)






43. 60 < all primes <70






44. Evaluate (4^3)^2






45. What is a subset?






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






47. How to determine percent increase?






48. What is the 'Solution' for a set of inequalities.






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






50. Simplify the expression [(b^2 - c^2) / (b - c)]