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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 left hand?






2. 5/8 in percent?






3. 413.03 x 10^(-4) =






4. x^6 / x^3






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






6. What is a tangent?






7. 5 bakeries sell an average of 300 muffins per bakery per day. If 2 stop making muffins but the total muffins sold stays the same - what is the average of muffins per bakery sold among the remaining?






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






9. Formula for the area of a circle?






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






11. What is the 'Range' of a function?






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






13. 1/6 in percent?






14. What is the slope of a horizontal line?






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






16. x^(-y)=






17. 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)]?






18. 2sqrt4 + sqrt4 =






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






20. Convert 0.7% to a fraction.






21. 4.809 X 10^7 =






22. Can you add sqrt 3 and sqrt 5?






23. What percent of 40 is 22?






24. 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?






25. Define a 'Term' -






26. sqrt 2(sqrt 6)=






27. 50 < all primes< 60






28. 20<all primes<30






29. (-1)^3 =






30. Ratio of ages of Anna and Emma is 3:5 and of Emma and Nicolas is 3:5. What is the ratio of Anna to Nicholas' ages?






31. What is a central angle?






32. 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?






33. Evaluate 3& 2/7 / 1/3






34. What is the empty set?






35. What is the 'union' of A and B?






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






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






38. What are the real numbers?






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






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






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






42. 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?






43. Evaluate (4^3)^2






44. 7/8 in percent?






45. 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?






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






47. 10<all primes<20






48. From a box of 12 candles - you are to remove 5. How many different sets of 5 candles could you remove?






49. 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?






50. 1/8 in percent?