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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. The objects in a set are called two names:






2. Length of an arc of a circle?






3. 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)]?






4. 2sqrt4 + sqrt4 =






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






6. 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






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






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






9. What is the surface area of a cylinder with radius 5 and height 8?






10. a^2 + 2ab + b^2






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






12. 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?






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






14. Whats the difference between factors and multiples?






15. How many multiples does a given number have?






16. Evaluate and write as a mixed number: 2/7 - 3/21 + 2 & 4/14






17. To multiply a number by 10^x






18. 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?






19. 5/8 in percent?






20. 60 < all primes <70






21. 50 < all primes< 60






22. What is the maximum value for the function g(x) = (-2x^2) -1?






23. 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?






24. What is the 'Restricted domain of a function'?






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






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






27. What percent of 40 is 22?






28. What are the roots of the quadrinomial x^2 + 2x + 1?






29. 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?






30. 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?






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






32. When the 'a' in the parabola is negative...






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






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






35. 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?






36. 70 < all primes< 80






37. sqrt 2(sqrt 6)=






38. Solve the quadratic equation ax^2 + bx + c= 0






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






40. What is the slope of a horizontal line?






41. What is an exterior angle?






42. Evaluate 4/11 + 11/12






43. Can you add sqrt 3 and sqrt 5?






44. 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?






45. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?






46. 6w^2 - w - 15 = 0






47. What is the slope of a vertical line?


48. 3/8 in percent?






49. Describe the relationship between the graphs of x^2 and (1/2)x^2






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