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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. All sides are equal and all of whose angles are equal. 1. can be inscribed in a circle and can be circumscribed about another circle. 2. each angle is equal to the sum of the angles divided by the number of sides 180(n-2)°/n.






2. Wx>wy






3. 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)






4. B>c+ d>e






5. A¹






6. Between 90° and 180°






7. 1.each pair of opposite sides are equal 2. the diagonals bisect eachother 3. the opposite angles are equal 4. one diagonal divides it into two congruent triangles and two diagonals divides it into two pairs of congruent triangles






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






9. Is a subset of every set






10. Sin 45°






11. 7-24-25






12. x more than y






13. 180°






14. Side a +side b of a ? is






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






16. Volume= e(edge)³ surface area= 6e²






17. ?






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






19. 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






20. If y²= x - then y =






21. C times as old as john

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22. Any integer is divisible by 9 - if






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






24. 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.






25. y years from now






26. Angles that equal 180 degrees






27. x>z






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






29. x+w> y+z






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






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






32. The distance from the center of the circle






33. 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*)






34. 1-1-v2 (90-45-45)






35. A line that is perpendicular to a radius and that passes through only one point of the circle.






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






37. V10






38. The measure of an interior angle is






39. Sum of two odd numbers is






40. x older than y






41. /100 (the ______ number over 100)






42. (3+5) +6= 3+ (5+6) and (3x5)6= 3(5x6)






43. 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)






44. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other






45. ?






46. 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 -






47. 1-v3- 2 (90-30-60)






48. ?






49. Ax= by + C






50. Parallel and never intersect - they have no solution at all - they are parallel with the same slope