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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= -b + vb²-4ac/2a and x = -b - vb²-4ac/2a






2. Diagonal= sv2






3. 9-40-41






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






5. 1/y-1/x x -y ? 0






6. Two tangents to a circle from the same point outside of the circle are always






7. The sum of the interior angles is






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






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






10. Integer is divisible by 2






11. Any integer is divisible by 3 - if






12. 2k + 1






13. The sum of any two sides of a triangle is greater than






14. The whole equals






15. Every set is a subset of






16. If two lines are parallel - the slope of one is






17. 2k






18. If the base angles of a triangle are equal - the triangle is






19. Sin 30°






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






21. 1-1-v2 (90-45-45)






22. Product of an even number and any other number is






23. When two parallel lines are crossed by a third straight line (transversal) - then






24. If two lines are perpendicular - the slope of one is the






25. Angles directly across each other are equal






26. 1/2d






27. Any integer is divisible by 4 - if






28. 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.






29. The difference between x and y






30. Volume= bh or ?r²h surface area= 2?rh (w/o bases) or 2?r(h+r) with bases






31. xw> yz






32. y<x






33. x(y-z)






34. Sin 60°






35. x>z






36. Are the lines drawn from each vertex to the midpoint of its opposite side. they cross at a point that divides each individual ______into two parts.






37. (x+y)(x+y)= (x+y)²






38. 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






39. If y²= x - then y =






40. 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*)






41. ?






42. Area= l x w perimeter = (2l)(2w)






43. Of






44. x +z > y+z






45. M= y2-y1/x2-x1






46. The product of an even number of negative numbers is






47. x > y or y< x






48. Area= s² perimeter= 4s






49. ?






50. The case where the two equations are equivalent (just two different forms of the same mathematical relation). Any point that satisfies either of the equations - automatically satisfies both