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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 diagonal of a rectangular solid?






2. a^2 - b^2 =






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






4. How many sides does a hexagon have?






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






6. 70 < all primes< 80






7. What is the measure of an exterior angle of a regular pentagon?






8. 40 < all primes<50






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






10. What is a parabola?






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






12. A brick with dimensions 10. 15 and 25 weighs 1.5 kg. A second brick (same density) has dimensions 12 - 18 - and 30. What is the weight of the second brick?






13. How many multiples does a given number have?






14. 8.84 / 5.2






15. Convert 0.7% to a fraction.






16. 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.






17. x^6 / x^3






18. Write 10 -843 X 10^7 in scientific notation






19. (12sqrt15) / (2sqrt5) =






20. What are 'Supplementary angles?'






21. For what values should the domain be restricted for the function f(x) = sqrt(x + 8)






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






23. What is the empty set?






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






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






26. 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?






27. (-1)^3 =






28. 1/2 divided by 3/7 is the same as






29. x^2 = 9. What is the value of x?






30. What is the common monomial factor in the expression 4(c^3)d - (c^2)(d^2) + 2cd?






31. A number is divisible by 4 is...






32. What are the irrational numbers?

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






34. What is the graph of f(x) shifted right c units or spaces?






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






36. What is the 'Solution' for a set of inequalities.






37. What is the slope of a vertical line?

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38. What is the order of operations?






39. 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?






40. Volume for a cylinder?






41. 60 < all primes <70






42. What is the graph of f(x) shifted left c units or spaces?






43. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






44. 20<all primes<30






45. What is the formula for computing simple interest?






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






47. Define a 'Term' -






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






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






50. 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