# 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 'domain' of a function?

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

3. What is the ratio of the sides of a 30-60-90 triangle?

4. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?

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

6. What is an arc of a circle?

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

8. 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?

9. What are the roots of the quadrinomial x^2 + 2x + 1?

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

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

12. 5x^2 - 35x -55 = 0

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

14. Reduce: 4.8 : 0.8 : 1.6

15. 5/6 in percent?

16. x^4 + x^7 =

17. 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?

18. What is the order of operations?

19. Which quadrant is the lower left hand?

20. Which quandrant is the lower right hand?

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

22. a^0 =

23. What is the slope of a horizontal line?

24. To convert a percent to a fraction....

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

26. Formula to calculate arc length?

27. What is the common monomial factor in the expression 4(c^3)d - (c^2)(d^2) + 2cd?

28. a^2 + 2ab + b^2

29. 6w^2 - w - 15 = 0

30. 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)?

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

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

33. What is a central angle?

34. 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)

35. 3/8 in percent?

36. 10<all primes<20

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

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

39. What is the empty set?

40. 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

41. x^6 / x^3

42. What is the name for a grouping of the members within a set based on a shared characteristic?

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

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

45. Length of an arc of a circle?

46. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?

47. 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))?

48. How to find the area of a sector?

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

50. Define a 'Term' -