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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. 0^0






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






3. 7/8 in percent?






4. 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






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






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






7. Which quadrant is the lower left hand?






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






9. 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?






10. Which quandrant is the lower right hand?






11. 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)






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






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






14. What is an exterior angle?






15. a^2 + 2ab + b^2






16. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






17. Factor x^2 - xy + x.






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






19. Can you add sqrt 3 and sqrt 5?






20. Order of quadrants:






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






22. Formula for the area of a circle?






23. What is the 'union' of A and B?






24. What is the measure of an exterior angle of a regular pentagon?






25. Legs 5 - 12. Hypotenuse?






26. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






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






28. Define a 'Term' -






29. Can you simplify sqrt72?






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






31. 5/6 in percent?






32. What is a set with no members called?






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






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






35. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






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






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






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






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






41. 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?






42. To convert a decimal to a percent...






43. 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?






44. x^(-y)=






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






46. What is the sum of the angles of a triangle?






47. What is a piecewise equation?






48. What are the irrational numbers?

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49. 4.809 X 10^7 =






50. What is the empty set?