## Test your basic knowledge |

# GRE Math: Common Errors

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

**2. x^4 + x^7 =**

**3. What is the 'domain' of a function?**

**4. Describe the relationship between the graphs of x^2 and (1/2)x^2**

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

**6. What is the coefficient of the x^2 term in the product of (x + 1)(x + 2)(x -1)?**

**7. 40 < all primes<50**

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

**9. Area of a triangle?**

**10. (6sqrt3) x (2sqrt5) =**

**11. 50 < all primes< 60**

**12. How to find the diagonal of a rectangular solid?**

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

**14. Simplify 4sqrt21 X 5sqrt2 / 10sqrt7**

**15. Order of quadrants:**

**16. Write 10 -843 X 10^7 in scientific notation**

**17. a^2 + 2ab + b^2**

**18. What is the 'Range' of a series of numbers?**

**19. If the two sides of a triangle are unequal then the longer side...**

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

**21. (a^-1)/a^5**

**22. 200 <_ x <_ 300. How many values of x are divisible by 5 & 8?**

**23. 5/8 in percent?**

**24. What are the members or elements of a set?**

**25. What is the formula for computing simple interest?**

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

**27. What is the absolute value function?**

**28. What is a set with no members called?**

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

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

**31. Convert 0.7% to a fraction.**

**32. 60 < all primes <70**

**33. Surface area for a cylinder?**

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

**35. a^0 =**

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

**37. 1:sqrt3:2 is the ratio of the sides of what kind of triangle?**

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

**39. To multiply a number by 10^x**

**40. 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?**

**41. Evaluate 4/11 + 11/12**

**42. x^(-y)=**

**43. What is the formula for compounded interest?**

**44. When the 'a' in the parabola is negative...**

**45. The objects in a set are called two names:**

**46. What are 'Supplementary angles?'**

**47. What percent of 40 is 22?**

**48. The four angles around a point measure y - 2y - 35 and 55 respectively. What is the value of y?**

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

**50. Legs 5 - 12. Hypotenuse?**