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GRE Math Strategies

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. Write down every member that the two sets have in common. The intersection of the sets A and B is a set written AnB






2. C²= a²+b² and angle x and y are equal to 90°






3. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)






4. The product of x and y






5. x(y+z)






6. In a triangle - if ?c(interior angle in triangle) and ?d(exterior angle out of triangle) are supplmentary angles - than ?a and ?b are remote interior angles to <d - thus - a +b+c = 180 (triangle) c+d = 180 (supplementary angles)






7. Is a subset of every set






8. x>0 and y>0 or x<0 and y<0






9. N= combinations taken (order does not matter) r= rate at a time nCr or C(n -r) = (n)!/(r)! (remember to cancel out common numbers)






10. 7-24-25






11. If b²-4ac > 0 there are






12. In a triangle - the greatest angles lies






13. Sum of two odd numbers is






14. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)






15. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)






16. ?






17. (amount of increase/original amount) x 100






18. When the elements of a set are ordered pairs






19. 360°






20. 1. determine a rough approximation of the square root of the number. 2. divide the number by all the primes that are less than the approx square root. If the number is not divisible by ANY of the these primes - then it is prime. If it IS divisible -






21. Angle whose sides are two chords. The vertex of the angles lies on the circumference of the circle. The number of degrees of the angle is equal to 1/2 the intercepted arc






22. Is a rectangular rhombus 1. all four sides are equal 2. opposite pairs of sides are parallel 3. diagonals are equal - are perpendicular to each other - and bisect each other. 4. all the angles are right triangles 5. diagonals intersect the vertices a






23. 1. solve the equation or inequality 2. use ONLY the solutions which satisfy the condition required - the set of all x such that x is greater than or equal to 10 R= {x: x=10}






24. x older than y






25. Area= s² perimeter= 4s






26. 1. subtract each number from the average of the numbers 2. square the result of each of the numbers 3. add all those results and then divide by how many numbers you originally had. 4. take the square root of that result






27. ?






28. M=number of favorable ways n= total number of ways (two events occurring is the prob of the first times the prob of the second)






29. V2






30. The point where the line crosses the x-axis - y will always = 0 in this case






31. 180°






32. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f






33. The measure of an interior angle is






34. x +z > y+z






35. V10






36. 1. square all choices given 2. select the closes choice that is too large and the one that is too small. 3. find the average of the two choices (not of the squares) 4. square the average - if it is greater than the original number - choose the lower






37. Is the set of the first components of the ordered pairs.






38. If b²-4ac < 0 - there are






39. The increase from x to y






40. Any integer is divisible by 10 - if






41. x > y or y< x






42. 5-12-13






43. x < y or y> x






44. ?






45. Any line that connects two points on a circle.






46. Ax= by + C






47. A°






48. Angle whose sides are two radii of the circle. The vertex of this angle is the center of the circle. The number of degrees is equal to the amount of arc length that the radd intercept.






49. (x-y)(x-y) = (x-y)²






50. The quotient of any quantity (except 0) divided by zero is infinity