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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. 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?






2. A number is divisible by 9 if...






3. To multiply a number by 10^x






4. What is the order of operations?






5. The larger the absolute value of the slope...






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






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






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






9. What is the sum of the angles of a triangle?






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






11. 7/8 in percent?






12. How to determine percent decrease?






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






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






15. 50 < all primes< 60






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






17. a^2 - b^2 =






18. Which quadrant is the lower left hand?






19. 10<all primes<20






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






21. What is a chord of a circle?






22. What is the absolute value function?






23. What is a major arc?






24. What is it called when a point is reflected to the quadrant opposite it (i.e. I to III or II to IV)?






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






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






27. 1/6 in percent?






28. Nine coins are tossed simultaneously. In how many of the outcomes will the fourth coin tossed show heads?






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






30. Is 0 even or odd?






31. If an inequality is multiplied or divided by a negative number....






32. What are the integers?






33. 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?






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






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






36. Define a 'Term' -






37. What is a tangent?






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






39. What is the name of set with a number of elements which cannot be counted?






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






41. Formula of rectangle where l increases by 20% and w decreases by 20%






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






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






44. How to find the circumference of a circle which circumscribes a square?






45. a^0 =






46. What is the percent formula?






47. If the 80th percentile of the measurements is 72degrees - about how many measurments are between 69 degrees and 72 degrees? Round your answer to the nearest tenth






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






49. Pi is a ratio of what to what?






50. 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)]?