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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. Area of a triangle?






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






3. If the 80th percentile of the measurements is 72degrees - about how many measurments are between 69 degrees and 72 degrees? Round your answer to the nearest tenth






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






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






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






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






8. Surface area for a cylinder?






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






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






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






12. 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?






13. Can you add sqrt 3 and sqrt 5?






14. 5 bakeries sell an average of 300 muffins per bakery per day. If 2 stop making muffins but the total muffins sold stays the same - what is the average of muffins per bakery sold among the remaining?






15. a^2 - b^2






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






17. What are the smallest three prime numbers greater than 65?






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






19. Convert 0.7% to a fraction.






20. What does the graph x^2 + y^2 = 64 look like?






21. 40 < all primes<50






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






23. What is a parabola?






24. Is 0 even or odd?






25. x^(-y)=






26. What is an isoceles triangle?






27. Legs 6 - 8. Hypotenuse?






28. What is the 'Range' of a series of numbers?






29. What is a central angle?






30. Factor x^2 - xy + x.






31. What number between 70 & 75 - inclusive - has the greatest number of factors?






32. (-1)^2 =






33. (-1)^3 =






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






35. What are the integers?






36. 5/6 in percent?






37. A number is divisible by 9 if...






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






39. 10<all primes<20






40. Which quadrant is the upper right hand?






41. 3/8 in percent?






42. Formula to calculate arc length?






43. 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?






44. What are complementary angles?






45. From a box of 12 candles - you are to remove 5. How many different sets of 5 candles could you remove?






46. 2sqrt4 + sqrt4 =






47. Circumference of a circle?






48. Evaluate 4/11 + 11/12






49. What is the slope of a vertical line?

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50. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?