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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 does scientific notation mean?






2. 50 < all primes< 60






3. x^4 + x^7 =






4. What is a tangent?






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






6. Legs 5 - 12. Hypotenuse?






7. To convert a percent to a fraction....






8. What is the set of elements which can be found in either A or B?






9. What is a subset?






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






11. Legs: 3 - 4. Hypotenuse?






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






13. 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?






14. Can you add sqrt 3 and sqrt 5?






15. Define a 'monomial'






16. 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?






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






18. What is the percent formula?






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






20. Can you simplify sqrt72?






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






22. There are 10 finalists for the school spelling bee. A first - second - and third place trophy will be awarded. How many different people can get the three prizes?






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






24. How to determine percent increase?






25. 10^6 has how many zeroes?






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






27. How many multiples does a given number have?






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






29. 8.84 / 5.2






30. Pi is a ratio of what to what?


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






32. What is an arc of a circle?






33. A company places a 6-symbol code on each product. The code consists of the letter T - followed by 3 numerical digits - and then 2 consonants (Y is a conson). How many codes are possible?






34. What are congruent triangles?






35. Define a 'Term' -






36. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






37. (12sqrt15) / (2sqrt5) =






38. 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?






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






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






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






42. 70 < all primes< 80






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






44. 5/8 in percent?






45. 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?






46. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






47. Order of quadrants:






48. What is a major arc?


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






50. How to find the circumference of a circle which circumscribes a square?