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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. Which quadrant is the upper right hand?






2. How to determine percent increase?






3. Area of a triangle?






4. What is the 'Solution' for a system of linear equations?






5. Can you add sqrt 3 and sqrt 5?






6. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






7. Whats the difference between factors and multiples?






8. a^2 - b^2 =






9. Evaluate and write as a mixed number: 2/7 - 3/21 + 2 & 4/14






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






11. 30< all primes<40






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






13. A number is divisible by 3 if ...






14. What is the intersection of A and B?






15. What is the name of set with a number of elements which cannot be counted?






16. What is a subset?






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






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






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






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






21. Define an 'expression'.






22. Simplify 9^(1/2) X 4^3 X 2^(-6)?






23. 70 < all primes< 80






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






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






26. What are complementary angles?






27. x^(-y)=






28. Which is greater? 64^5 or 16^8






29. a^2 + 2ab + b^2






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






31. What are the rational numbers?






32. If you have a set of n objects - but you only want to order k of them - what formula do you use to determine the number of permutations?






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






34. 5x^2 - 35x -55 = 0






35. 4.809 X 10^7 =






36. 5/8 in percent?






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






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






39. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






40. What is a parabola?






41. 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?






42. How to determine percent decrease?






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






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






45. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. How many different people can get the three prizes?






46. What is a minor arc?

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47. A number is divisible by 4 is...






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






49. Legs 5 - 12. Hypotenuse?






50. 0^0