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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. Reduce: 4.8 : 0.8 : 1.6






3. 70 < all primes< 80






4. 25^(1/2) or sqrt. 25 =






5. What are the roots of the quadrinomial x^2 + 2x + 1?






6. What is the third quartile of the following data set: 44 - 58 - 63 - 63 - 68 - 70 - 82






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






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






9. x^4 + x^7 =






10. 1/8 in percent?






11. What number between 70 & 75 - inclusive - has the greatest number of factors?






12. 1/2 divided by 3/7 is the same as






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






14. How to determine percent increase?






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






16. (12sqrt15) / (2sqrt5) =






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






18. 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?






19. Which quadrant is the upper right hand?






20. 4.809 X 10^7 =






21. Which quadrant is the lower left hand?






22. Legs 6 - 8. Hypotenuse?






23. In a regular polygon with n sides - the formula for the sum of interior angles






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. Simplify the expression (p^2 - q^2)/ -5(q - p)






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






27. Can you simplify sqrt72?






28. Define an 'expression'.






29. Convert 0.7% to a fraction.






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






31. Which is greater? 200x^295 or 10x^294?






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






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






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






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






36. What are 'Supplementary angles?'






37. 40 < all primes<50






38. 413.03 x 10^(-4) =






39. To convert a percent to a fraction....






40. 0^0






41. 10<all primes<20






42. The slope of a line perpendicular to (a/b)?






43. What is a piecewise equation?






44. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?






45. (-1)^2 =






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






47. What are the irrational numbers?

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






49. What is the ratio of the sides of an isosceles right triangle?






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