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






2. To multiply a number by 10^x






3. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?






4. What is a piecewise equation?






5. Evaluate (4^3)^2






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






7. What is a central angle?






8. What is a set with no members called?






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






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






11. What are 'Supplementary angles?'






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






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






14. What is the 'union' of A and B?






15. Define a 'Term' -






16. Define a 'monomial'






17. What is a subset?






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






19. 5 bakeries sell an average of 300 muffins per bakery per day. If 2 stop making muffins but the total muffins sold stays the same - what is the average of muffins per bakery sold among the remaining?






20. Order of quadrants:






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






22. Which quadrant is the upper left hand?






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






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






25. 4.809 X 10^7 =






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






27. How many 3-digit positive integers are even and do not contain the digit 4?






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






29. 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?






30. What are the irrational numbers?

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






32. (-1)^3 =






33. 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






34. What are the integers?






35. Hector invested $6000. Part was invested in account with 9% simple annual interest - and the rest in account with 7% simple annual interest. If he earned $490 in the first year of these investments - how much did he invest in each account?






36. Which is greater? 27^(-4) or 9^(-8)






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






38. 2sqrt4 + sqrt4 =






39. What is the maximum value for the function g(x) = (-2x^2) -1?






40. What are the rational numbers?






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






42. If Madagascar'S exports totaled 1.3 billion in 2009 - and 4% came from China - what was the value in millions of the country'S exports to China?






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






44. How to determine percent decrease?






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






46. Volume for a cylinder?






47. How to find the area of a sector?






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






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






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