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 the formula for compounded interest?

2. What does the graph (x+2)^2 + (y+2)^2 = 9 look like?

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

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

5. 1/2 divided by 3/7 is the same as

6. How many sides does a hexagon have?

7. Legs 6 - 8. Hypotenuse?

8. How to determine percent increase?

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

10. A triangle is inscribed in a semi circle with legs 5 and 12. What is the circumfermence of the semicircle?

11. Define a 'Term' -

12. What is a chord of a circle?

13. Nine coins are tossed simultaneously. In how many of the outcomes will the fourth coin tossed show heads?

14. Number of degrees in a triangle

15. 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?

16. What is the slope of a vertical line?

17. How to determine percent decrease?

18. What are the irrational numbers?

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

20. Factor a^2 + 2ab + b^2

21. For similar triangles - the ratio of their corresponding sides is 2:3. What is the ratio of their areas?

22. 1:1:sqrt2 is the ratio of the sides of what kind of triangle?

23. Factor x^2 - xy + x.

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

25. 40 < all primes<50

26. 5/8 in percent?

27. What is a minor arc?

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

29. 1/8 in percent?

30. (6sqrt3) x (2sqrt5) =

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

32. 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?

33. 10<all primes<20

34. 1/6 in percent?

35. Formula for the area of a circle?

36. 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))?

37. If r - t - s & u are distinct - consecutive prime numbers - less than 31 - which of the following could be an average of them (4 - 4.25 - 6 - 9 - 24 - 22 - 24)

38. 5x^2 - 35x -55 = 0

39. a^2 - 2ab + b^2

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

41. What is a central angle?

42. What does scientific notation mean?

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

44. 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?

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

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

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

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

49. 10^6 has how many zeroes?

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