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






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






3. 4.809 X 10^7 =






4. What are the rational numbers?






5. To multiply a number by 10^x






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






7. Pi is a ratio of what to what?

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8. How to find the area of a sector?






9. The ratio of the areas of two similar polygons is ...






10. How to find the diagonal of a rectangular solid?






11. When the 'a' in a parabola is positive....






12. Formula for the area of a sector of a circle?






13. What is a major arc?

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






15. 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?






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






17. 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?






18. If a=-1 and b=3 - what is the value of (4(a^3)(b^2) - 12(a^2)(b^5)) / (16(a^3)(b^2))?






19. Factor x^2 - xy + x.






20. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






21. What is the formula for compounded interest?






22. If 10800 is invested at a simple interest rate of 4% - what is the value of the investment after 18 months?






23. Surface area for a cylinder?






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






25. a^2 + 2ab + b^2






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






27. Is 0 even or odd?






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






29. 5/8 in percent?






30. What is the intersection of A and B?






31. Define a 'monomial'






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






33. (x^2)^4






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






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






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






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






38. How many sides does a hexagon have?






39. What are the smallest three prime numbers greater than 65?






40. Suppose that the graph of f(x) is the result of stretching y=x + 5 away from the x-axis by a factor of 2. What is the new equation for the graph f(x)?






41. Convert 0.7% to a fraction.






42. What is a chord of a circle?






43. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






44. What is the area of a regular hexagon with side 6?






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






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






47. (6sqrt3) x (2sqrt5) =






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






49. Legs 5 - 12. Hypotenuse?






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