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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 the name for a grouping of the members within a set based on a shared characteristic?






2. Can you simplify sqrt72?






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






4. What is a set with no members called?






5. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






7. 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?






8. What is the formula for computing simple interest?






9. When does a function automatically have a restricted domain (2)?






10. 5x^2 - 35x -55 = 0






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






12. Legs: 3 - 4. Hypotenuse?






13. What transformation occurs if point C is reflected over the x-axis and then the y-axis?






14. How to determine percent increase?






15. What is the ratio of the sides of an isosceles right triangle?






16. 8.84 / 5.2






17. 1/2 divided by 3/7 is the same as






18. What are the integers?






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






20. What is the ratio of the sides of a 30-60-90 triangle?






21. How many 3-digit positive integers are even and do not contain the digit 4?






22. Can you subtract 3sqrt4 from sqrt4?






23. 10^6 has how many zeroes?






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






25. What is a major arc?

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26. 6w^2 - w - 15 = 0






27. 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






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






29. Can the output value of a function have more than one input value?






30. To convert a decimal to a percent...






31. 40 < all primes<50






32. Nine coins are tossed simultaneously. In how many of the outcomes will the fourth coin tossed show heads?






33. Employee X is paid 19.50 per hour no matter how many a week. Employee Y earns 18 for the first 40 and 1.5 the hourly wage for every hour after that. If both earned the same amount and worked the same in one week - how many did each work?






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






35. What is the side length of an equilateral triangle with altitude 6?






36. Which quandrant is the lower right hand?






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






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






39. Define a 'monomial'






40. Circumference of a circle?






41. 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?






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






43. What are 'Supplementary angles?'






44. Define a 'Term' -






45. 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)






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






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






48. If the two sides of a triangle are unequal then the longer side...






49. Factor x^2 - xy + x.






50. Find the surface area of a cylinder with radius 3 and height 12.