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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. x more than y






2. Any integer is divisible by 9 - if






3. 2k






4. If b²-4ac < 0 - there are






5. 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}






6. x>z






7. Then their intersection is the null or empty set - written as Ø






8. If the each element of the domain occurs only once as a FIRST component






9. Is a subset of every set






10. V2/2- v2/2 - 1 (90-45-45)






11. | |






12. y<x






13. If under the operation - any two members of the set constitute an element of the set ( * the product of the elements multiplied by themselves must also be an element of the set*)






14. 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






15. M= y2-y1/x2-x1






16. 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






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






18. Every set is a subset of






19. 2k + 1






20. 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)






21. The sum of the interior angles is






22. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints






23. Less than 90°






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






25. (x+y)(x+y)= (x+y)²






26. Area= 1/2bh perimeter= a+b+c






27. z>y






28. ? if a side is equal to b side then - the opposite corresponding angles are






29. ?






30. (amount of decrease/original amount) x 100






31. 3(4+1)= 3 x 4 + 3 x 1






32. 9-40-41






33. The angles opposite to sides that are equal in length have






34. 8-15-17






35. x+w> y+z






36. A chord through the center of the circle






37. x older than y






38. If an equation can be put into the form y= mx +b - then






39. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)






40. Any arc length is less than






41. 1. round the numbers being multiplied to one more place than it is being asked. 2. Multiply the rounded off numbers 3. round of product to desired number of places






42. A<x and x<b






43. All three sides and all three angles are equal






44. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)






45. Area= 1/2?r2 length= 1/2?d= ?r perimeter= d(1/2? +1)






46. A closed plane whose sides are straight lines. The sum of the angles is equal to 180(n-2) - where n is the number of sides.






47. Of






48. Intersect at only one point - the point is the only solution to the pair of equations






49. If b²-4ac > 0 there are






50. 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)