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






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






3. 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?






4. 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?






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






6. What is a central angle?






7. What is the intersection of A and B?






8. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






9. How many sides does a hexagon have?






10. To multiply a number by 10^x






11. x^4 + x^7 =






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






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






14. Number of degrees in a triangle






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






16. Evaluate 3& 2/7 / 1/3






17. (-1)^3 =






18. What are congruent triangles?






19. Which quandrant is the lower right hand?






20. If the two sides of a triangle are unequal then the longer side...






21. 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?






22. 30< all primes<40






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






24. 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?






25. The ratio of the areas of two similar polygons is ...






26. What is a tangent?






27. To convert a decimal to a percent...






28. 10<all primes<20






29. Can the output value of a function have more than one input value?






30. Order of quadrants:






31. 5/8 in percent?






32. What is the empty set?






33. Factor x^2 - xy + x.






34. What is a set with no members called?






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






36. What is an exterior angle?






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






38. Is 0 even or odd?






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






40. 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?






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






42. Evaluate 4/11 + 11/12






43. What is a finite set?






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






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






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






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






48. (6sqrt3) x (2sqrt5) =






49. T or F? Given d -e &f =/ 0 - [(d^3)e(f^5)] / 2d(e^3) / [3(d^2)(e^3)(f^7)] / [6(e^5)(f^2)]?






50. What does scientific notation mean?