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






2. 3/8 in percent?






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






4. What is the ratio of the sides of a 30-60-90 triangle?






5. What is a subset?






6. What is a set with no members called?






7. Evaluate (4^3)^2






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






9. The number of degrees in the largest angle of a triangle inscribed in a circle - in which the diameter of the circle is one side of the triangle.






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






11. Evaluate 4/11 + 11/12






12. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






13. sqrt 2(sqrt 6)=






14. 25^(1/2) or sqrt. 25 =






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






16. 6w^2 - w - 15 = 0






17. If 10800 is invested at a simple interest rate of 4% - what is the value of the investment after 18 months?






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






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






20. What is the surface area of a cylinder with radius 5 and height 8?






21. How to find the diagonal of a rectangular solid?






22. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. In how many ways can the judges award the 3 prizes?






23. What is the slope of a vertical line?


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






25. a^2 - b^2






26. Whats the difference between factors and multiples?






27. What are congruent triangles?






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






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






30. Circumference of a circle?






31. What is the empty set?






32. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?






33. What is a chord of a circle?






34. 5/6 in percent?






35. Which quadrant is the upper right hand?






36. x^4 + x^7 =






37. Suppose that the graph of f(x) is the result of stretching y=x + 5 away from the x-axis by a factor of 2. What is the new equation for the graph f(x)?






38. What are the irrational numbers?


39. (x^2)^4






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






41. What are the real numbers?






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






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






44. Legs: 3 - 4. Hypotenuse?






45. What is the formula for computing simple interest?






46. (6sqrt3) x (2sqrt5) =






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






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






49. What is an arc of a circle?






50. Define an 'expression'.