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






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






3. Convert 0.7% to a fraction.






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






5. In a triangle inscribed inside a circle - where the diameter is one side of the triangle - which angle is largest?






6. Which quandrant is the lower right hand?






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






8. Evaluate 4/11 + 11/12






9. Describe the relationship between 3x^2 and 3(x - 1)^2






10. 2sqrt4 + sqrt4 =






11. What is a finite set?






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






13. (6sqrt3) x (2sqrt5) =






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






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






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






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






18. (-1)^3 =






19. To multiply a number by 10^x






20. 5/8 in percent?






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






22. How many multiples does a given number have?






23. 7/8 in percent?






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






25. 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?






26. Which is greater? 200x^295 or 10x^294?






27. 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?






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






29. What is the formula for computing simple interest?






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






31. What percent of 40 is 22?






32. Formula to calculate arc length?






33. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7






34. Can you simplify sqrt72?






35. 3/8 in percent?






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






37. What is the empty set?






38. What is the slope of a vertical line?

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39. Whats the difference between factors and multiples?






40. Define a 'Term' -






41. Define an 'expression'.






42. Simplify the expression (p^2 - q^2)/ -5(q - p)






43. What is the order of operations?






44. If you have a set of n objects - but you only want to order k of them - what formula do you use to determine the number of permutations?






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






46. Area of a triangle?






47. Reduce: 4.8 : 0.8 : 1.6






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






49. 5x^2 - 35x -55 = 0






50. What is the 'union' of A and B?






Can you answer 50 questions in 15 minutes?



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