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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. 6w^2 - w - 15 = 0






2. Legs 6 - 8. Hypotenuse?






3. sqrt 2(sqrt 6)=






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






5. Legs: 3 - 4. Hypotenuse?






6. 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))?






7. What is a subset?






8. What is a tangent?






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






10. 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?






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






12. What are congruent triangles?






13. If the 80th percentile of the measurements is 72degrees - about how many measurments are between 69 degrees and 72 degrees? Round your answer to the nearest tenth






14. What is the 'domain' of a function?






15. 25^(1/2) or sqrt. 25 =






16. Can you add sqrt 3 and sqrt 5?






17. What are the rational numbers?






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






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






20. 2sqrt4 + sqrt4 =






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






22. What is the slope of a horizontal line?






23. 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?






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






25. Order of quadrants:






26. To convert a decimal to a percent...






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






28. 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?






29. Whats the difference between factors and multiples?






30. How many multiples does a given number have?






31. What are the irrational numbers?

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32. How to find the area of a sector?






33. 0^0






34. What is a minor arc?

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35. 8.84 / 5.2






36. 20<all primes<30






37. Convert 0.7% to a fraction.






38. If an inequality is multiplied or divided by a negative number....






39. 1/2 divided by 3/7 is the same as






40. Define a 'monomial'






41. 413.03 x 10^(-4) =






42. 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?






43. Is 0 even or odd?






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






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






46. (6sqrt3) x (2sqrt5) =






47. a^0 =






48. What is the area of a regular hexagon with side 6?






49. Area of a triangle?






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







Sorry!:) No result found.

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