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






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






3. What is a parabola?






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






5. 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?






6. What does scientific notation mean?






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






8. T or F? Given d -e &f =/ 0 - [(d^3)e(f^5)] / 2d(e^3) / [3(d^2)(e^3)(f^7)] / [6(e^5)(f^2)]?






9. What are the real numbers?






10. 20<all primes<30






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






12. What are complementary angles?






13. 70 < all primes< 80






14. Simplify (a^2 + b)^2 - (a^2 - b)^2






15. Can you add sqrt 3 and sqrt 5?






16. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. In how many ways can the judges award the 3 prizes?






17. Number of degrees in a triangle






18. What are the smallest three prime numbers greater than 65?






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






20. Area of a triangle?






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






22. If 10800 is invested at a simple interest rate of 4% - what is the value of the investment after 18 months?






23. 3/8 in percent?






24. If 8 schools are in a conference - how many games are played if each team plays each other exactly once?






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






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






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






28. Is 0 even or odd?






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






30. 0^0






31. x^(-y)=






32. What is the slope of a horizontal line?






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






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






35. Pi is a ratio of what to what?

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






37. sqrt 2(sqrt 6)=






38. Legs: 3 - 4. Hypotenuse?






39. x^4 + x^7 =






40. 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?






41. 7/8 in percent?






42. Factor x^2 - xy + x.






43. Order of quadrants:






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






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






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






47. a^2 - 2ab + b^2






48. Define an 'expression'.






49. Which quandrant is the lower right hand?






50. What percent of 40 is 22?