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






2. Factor a^2 + 2ab + b^2






3. What is the area of a regular hexagon with side 6?






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






5. What are the integers?






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






7. To multiply a number by 10^x






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






9. What is the formula for computing simple interest?






10. To convert a decimal to a percent...






11. Which quadrant is the lower left hand?






12. What is a set with no members called?






13. 70 < all primes< 80






14. Ratio of ages of Anna and Emma is 3:5 and of Emma and Nicolas is 3:5. What is the ratio of Anna to Nicholas' ages?






15. To convert a percent to a fraction....






16. Legs 5 - 12. Hypotenuse?






17. 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?






18. 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))?






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






20. 60 < all primes <70






21. Which quandrant is the lower right hand?






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






23. 8.84 / 5.2






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






25. In a regular polygon with n sides - the formula for the sum of interior angles






26. a^2 - 2ab + b^2






27. 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?






28. Pi is a ratio of what to what?






29. 2sqrt4 + sqrt4 =






30. Evaluate 4/11 + 11/12






31. Legs: 3 - 4. Hypotenuse?






32. When the 'a' in a parabola is positive....






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






34. Reduce: 4.8 : 0.8 : 1.6






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






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






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






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






39. What are the irrational numbers?






40. 1/8 in percent?






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






42. 30< all primes<40






43. A number is divisible by 6 if...






44. Convert 0.7% to a fraction.






45. What does scientific notation mean?






46. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






47. x^(-y)=






48. (-1)^2 =






49. Formula to find a circle'S circumference from its radius?






50. What is the formula for compounded interest?