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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 a chord of a circle?






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






3. 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?






4. What is an isoceles triangle?






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






6. 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?






7. (-1)^3 =






8. 40 < all primes<50






9. What are 'Supplementary angles?'






10. 10^6 has how many zeroes?






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






12. Which quandrant is the lower right hand?






13. Define a 'Term' -






14. 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






15. What is the intersection of A and B?






16. Legs 5 - 12. Hypotenuse?






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






18. How to determine percent decrease?






19. 7/8 in percent?






20. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






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






22. 8.84 / 5.2






23. Simplify 9^(1/2) X 4^3 X 2^(-6)?






24. What is the measure of an exterior angle of a regular pentagon?






25. Define an 'expression'.






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






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






28. Legs: 3 - 4. Hypotenuse?






29. 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?






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






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






32. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






33. What is the absolute value function?






34. (6sqrt3) x (2sqrt5) =






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






36. 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?






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






38. 50 < all primes< 60






39. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?






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






41. Whats the difference between factors and multiples?






42. What is a major arc?






43. Formula to find a circle'S circumference from its diameter?






44. The slope of a line perpendicular to (a/b)?






45. 70 < all primes< 80






46. Which quadrant is the upper left hand?






47. 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?






48. 2sqrt4 + sqrt4 =






49. 25^(1/2) or sqrt. 25 =






50. Which is greater? 27^(-4) or 9^(-8)