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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. What is the common monomial factor in the expression 4(c^3)d - (c^2)(d^2) + 2cd?






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






3. In similar hexagons - the ratio of the areas is 16:25. What is the ratio of their corresponding sides?






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






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






6. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






7. Legs 6 - 8. Hypotenuse?






8. 25^(1/2) or sqrt. 25 =






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






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






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






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






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






14. P and r are factors of 100. What is greater - pr or 100?






15. 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?






16. Can you simplify sqrt72?






17. 20<all primes<30






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






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






20. What is a major arc?

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






22. x^(-y)=






23. To convert a decimal to a percent...






24. What are congruent triangles?






25. Is 0 even or odd?






26. Write 10 -843 X 10^7 in scientific notation






27. 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?






28. What is a tangent?






29. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. How many different people can get the three prizes?






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






31. What is the formula for computing simple interest?






32. What are the rational numbers?






33. 8.84 / 5.2






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






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






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






37. How many digits are there between the decimal point and the first even digit in the decimal equivalent of 1/[(2^8)(5^3)]






38. Which quadrant is the upper right hand?






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






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






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






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






43. x^6 / x^3






44. 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)?






45. 6w^2 - w - 15 = 0






46. What is a parabola?






47. 1/8 in percent?






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






49. 4.809 X 10^7 =






50. What is the absolute value function?