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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. 20<all primes<30






2. When does a function automatically have a restricted domain (2)?






3. What is a piecewise equation?






4. 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.






5. sqrt 2(sqrt 6)=






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






7. The objects in a set are called two names:






8. What is a central angle?






9. What are the integers?






10. What is a set with no members called?






11. What is the slope of a vertical line?

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






13. To multiply a number by 10^x






14. Evaluate (4^3)^2






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






16. (-1)^2 =






17. What are the irrational numbers?

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






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






20. 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?






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






22. If r - t - s & u are distinct - consecutive prime numbers - less than 31 - which of the following could be an average of them (4 - 4.25 - 6 - 9 - 24 - 22 - 24)






23. Length of an arc of a circle?






24. Which quadrant is the upper left hand?






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






26. What are the rational numbers?






27. How to find the area of a sector?






28. How to determine percent decrease?






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






30. A number is divisible by 6 if...






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






32. What is the absolute value function?






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






34. x^(-y)=






35. Which quadrant is the lower left hand?






36. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






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






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






40. 10^6 has how many zeroes?






41. How many multiples does a given number have?






42. 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?






43. Pi is a ratio of what to what?

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






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






46. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






47. Max and Min lengths for a side of a triangle?






48. Is 0 even or odd?






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






50. What is the set of elements found in both A and B?