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






2. 8.84 / 5.2






3. What percent of 40 is 22?






4. Which is greater? 27^(-4) or 9^(-8)






5. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






6. Factor x^2 - xy + x.






7. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






9. 10^6 has how many zeroes?






10. 25^(1/2) or sqrt. 25 =






11. (-1)^2 =






12. sqrt 2(sqrt 6)=






13. How many multiples does a given number have?






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






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






16. (-1)^3 =






17. Can the input value of a function have more than one output value (i.e. x: y - y1)?






18. Which quandrant is the lower right hand?






19. x^6 / x^3






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






21. Order of quadrants:






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






23. How many sides does a hexagon have?






24. 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?






25. 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






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






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






28. Simplify (a^2 + b)^2 - (a^2 - b)^2






29. Which quadrant is the lower left hand?






30. What is an exterior angle?






31. Define a 'Term' -






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






33. How to determine percent increase?






34. x^(-y)=






35. 4.809 X 10^7 =






36. Number of degrees in a triangle






37. 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)






38. 60 < all primes <70






39. Which is greater? 200x^295 or 10x^294?






40. Define a 'monomial'






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






42. Find the surface area of a cylinder with radius 3 and height 12.






43. 1/2 divided by 3/7 is the same as






44. 5/6 in percent?






45. (a^-1)/a^5






46. Formula to calculate arc length?






47. 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?






48. 0^0






49. Convert 0.7% to a fraction.






50. a^0 =