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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. 6w^2 - w - 15 = 0






2. What is a subset?






3. a^0 =






4. 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?






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






6. A company places a 6-symbol code on each product. The code consists of the letter T - followed by 3 numerical digits - and then 2 consonants (Y is a conson). How many codes are possible?






7. A number is divisible by 6 if...






8. What are complementary angles?






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






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






11. What percent of 40 is 22?






12. What is the formula for computing simple interest?






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






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






15. 413.03 x 10^(-4) =






16. (6sqrt3) x (2sqrt5) =






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






18. Which quadrant is the upper right hand?






19. Surface area for a cylinder?






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






21. x^(-y)=






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






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






24. Convert 0.7% to a fraction.






25. 20<all primes<30






26. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?






27. (-1)^3 =






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






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






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






31. Can you subtract 3sqrt4 from sqrt4?






32. What are the irrational numbers?

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






34. 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?






35. 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?






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






37. In a regular polygon with n sides - the formula for the sum of interior angles






38. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?






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






40. 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?






41. 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?






42. Legs 6 - 8. Hypotenuse?






43. Evaluate 4/11 + 11/12






44. 7/8 in percent?






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






46. Area of a triangle?






47. Can the input value of a function have more than one output value (i.e. x: y - y1)?






48. Define a 'monomial'






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






50. 60 < all primes <70