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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. How to find the area of a sector?






2. Whats the difference between factors and multiples?






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






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






5. Order of quadrants:






6. Define a 'Term' -






7. What is the order of operations?






8. 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






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






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






11. Is 0 even or odd?






12. Legs 5 - 12. Hypotenuse?






13. 7/8 in percent?






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






15. sqrt 2(sqrt 6)=






16. What is an exterior angle?






17. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






18. What is the percent formula?






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






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






21. Can you add sqrt 3 and sqrt 5?






22. A number is divisible by 4 is...






23. Length of an arc of a circle?






24. a^2 - b^2






25. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






27. x^6 / x^3






28. What percent of 40 is 22?






29. Simplify the expression [(b^2 - c^2) / (b - c)]






30. What are complementary angles?






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






32. a^2 + 2ab + b^2






33. What are the members or elements of a set?






34. 40 < all primes<50






35. 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?






36. Legs: 3 - 4. Hypotenuse?






37. What is the formula for compounded interest?






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






39. 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.






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






41. 0^0






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






43. (6sqrt3) x (2sqrt5) =






44. What is a major arc?

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






46. What is a central angle?






47. 5/6 in percent?






48. The perimeter of a square is 48 inches. The length of its diagonal is:






49. In a triangle where the two legs are 4 and 3 - what is the value of a line directly intersecting the middle coming from the meeting point of the two legs?






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