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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. What is an arc of a circle?






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






3. x^(-y)=






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






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






6. How to determine percent increase?






7. What is the absolute value function?






8. 0^0






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






10. Formula to calculate arc length?






11. 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?






12. If 4500 is invested at a simple interest rate of 6% - what is the value of the investment after 10 months?






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






14. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






16. What is a parabola?






17. 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?






18. What is the formula for compounded interest?






19. a^2 - b^2 =






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






21. Define a 'monomial'






22. To convert a decimal to a percent...






23. What is a central angle?






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






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






26. What is the intersection of A and B?






27. Order of quadrants:






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






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






30. How many multiples does a given number have?






31. 50 < all primes< 60






32. Factor a^2 + 2ab + b^2






33. 6w^2 - w - 15 = 0






34. Define an 'expression'.






35. A number is divisible by 9 if...






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






37. 10<all primes<20






38. The four angles around a point measure y - 2y - 35 and 55 respectively. What is the value of y?






39. a^2 + 2ab + b^2






40. Formula of rectangle where l increases by 20% and w decreases by 20%






41. 30< all primes<40






42. What are the real numbers?






43. 1/2 divided by 3/7 is the same as






44. What is a chord of a circle?






45. Define a 'Term' -






46. 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?






47. 1/6 in percent?






48. What are the integers?






49. Which quadrant is the upper left hand?






50. Suppose that the graph of f(x) is the result of sliding the graph of y=2x^2 down 3 units of spaces. What is the new equation?