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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 a parabola?






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






3. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






4. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






5. The perimeter of a square is 48 inches. The length of its diagonal is:






6. Evaluate 4/11 + 11/12






7. 6w^2 - w - 15 = 0






8. Area of a triangle?






9. Formula of rectangle where l increases by 20% and w decreases by 20%






10. For similar triangles - the ratio of their corresponding sides is 2:3. What is the ratio of their areas?






11. What is the intersection of A and B?






12. 1/6 in percent?






13. What are the members or elements of a set?






14. If you have a set of n objects - but you only want to order k of them - what formula do you use to determine the number of permutations?






15. What is the order of operations?






16. Reduce: 4.8 : 0.8 : 1.6






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






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






19. Legs: 3 - 4. Hypotenuse?






20. Volume for a cylinder?






21. 5/8 in percent?






22. What is a minor arc?

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23. A cylinder has a surface area of 22pi. If the cylinder has a height of 10 - what is the radius?






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






25. Which quandrant is the lower right hand?






26. A number is divisible by 3 if ...






27. 5x^2 - 35x -55 = 0






28. Suppose that the graph of f(x) is the result of sliding the graph of y=2x^2 down 3 units of spaces. What is the new equation?






29. 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?






30. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. In how many ways can the judges award the 3 prizes?






31. Is 0 even or odd?






32. 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)






33. Order of quadrants:






34. What is the formula for compounded interest?






35. If 8 schools are in a conference - how many games are played if each team plays each other exactly once?






36. 50 < all primes< 60






37. sqrt 2(sqrt 6)=






38. What is the slope of a vertical line?

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39. What is it called when a point is reflected to the quadrant opposite it (i.e. I to III or II to IV)?






40. What is a tangent?






41. 10<all primes<20






42. x^(-y)=






43. Surface area for a cylinder?






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






45. What are the integers?






46. What is a finite set?






47. The larger the absolute value of the slope...






48. Which is greater? 64^5 or 16^8






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






50. Which quadrant is the lower left hand?