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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. Reduce: 4.8 : 0.8 : 1.6






2. 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?






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






4. Convert 0.7% to a fraction.






5. 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))?






6. Suppose you have a set of n objects - and you want to select k of them - but the order doesn'T matter. What formula do you use to determine the number of combinations of n objects taken k at a time?






7. 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?






8. What is an isoceles triangle?






9. What is the intersection of A and B?






10. Legs: 3 - 4. Hypotenuse?






11. What are the roots of the quadrinomial x^2 + 2x + 1?






12. What is a minor arc?


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






14. Is 0 even or odd?






15. What is the 'Restricted domain of a function'?






16. What is the empty set?






17. 1/2 divided by 3/7 is the same as






18. Describe the relationship between 3x^2 and 3(x - 1)^2






19. Can you add sqrt 3 and sqrt 5?






20. x^2 = 9. What is the value of x?






21. 10<all primes<20






22. Evaluate 4/11 + 11/12






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






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






25. 2sqrt4 + sqrt4 =






26. What is the percent formula?






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






28. What are the integers?






29. To multiply a number by 10^x






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






31. sqrt 2(sqrt 6)=






32. What are 'Supplementary angles?'






33. What percent of 40 is 22?






34. 6w^2 - w - 15 = 0






35. Max and Min lengths for a side of a triangle?






36. Whats the difference between factors and multiples?






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






38. x^4 + x^7 =






39. (-1)^2 =






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






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






42. Describe the relationship between the graphs of x^2 and (1/2)x^2






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






44. 5/6 in percent?






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






46. 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?






47. x^6 / x^3






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






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






50. How many 3-digit positive integers are even and do not contain the digit 4?