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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. 25^(1/2) or sqrt. 25 =






2. What is the intersection of A and B?






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






4. 50 < all primes< 60






5. What is the formula for compounded interest?






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






7. Legs 6 - 8. Hypotenuse?






8. 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?






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






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






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






12. In a triangle where the two legs are 4 and 3 - what is the value of a line directly intersecting the middle coming from the meeting point of the two legs?






13. What is the 'Range' of a series of numbers?






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






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






16. The larger the absolute value of the slope...






17. What are complementary angles?






18. What does the graph x^2 + y^2 = 64 look like?






19. What is the slope of a horizontal line?






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






21. (x^2)^4






22. How many digits are there between the decimal point and the first even digit in the decimal equivalent of 1/[(2^8)(5^3)]






23. Whats the difference between factors and multiples?






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






25. What is a set with no members called?






26. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






27. 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?






28. Can you add sqrt 3 and sqrt 5?






29. In similar hexagons - the ratio of the areas is 16:25. What is the ratio of their corresponding sides?






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






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






32. 1/8 in percent?






33. 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?






34. What is a central angle?






35. Evaluate 4/11 + 11/12






36. Reduce: 4.8 : 0.8 : 1.6






37. To convert a percent to a fraction....






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






39. What is a finite set?






40. How to determine percent decrease?






41. Evaluate (4^3)^2






42. What are the members or elements of a set?






43. If r - t - s & u are distinct - consecutive prime numbers - less than 31 - which of the following could be an average of them (4 - 4.25 - 6 - 9 - 24 - 22 - 24)






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






45. How to find the area of a sector?






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






47. What is the slope of a vertical line?

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48. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






49. What percent of 40 is 22?






50. 1/6 in percent?