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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. z>y
x²-2xy+y²
x<0 and z=x+y
positive
tangent

2. In transversals
all acute angles are equal and all obtuse angles are equal
odd
x-y
relation

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)
approx products
combinations
circle
diameter of circle

4. ?
a+b+d=c+d
belongs to
vertical angles
hexagon

5. Wx<wy
w<0 and x>y
a+b+d=c+d
isosceles triangle
x²-y²

6. x>0 and y<0 or x<0 and y >0
parallel
xy< 0
0 - 2 - 4 - 6 - 8
equal angles

7. V2
1.4
equilateral triangle
the square of x
1

8. Any integer is divisible by 3 - if
x+y/xy
the sum of its digits is divisible by 3
x%
odd

9. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
odd
x intercept
hemisphere
x-y

10. x/100
is a subset of
properties of a rhombus
angle bisector
x%

11. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
permutations
simultaneous equations in 2 unknowns
any variable
trapezoid

12. Distributive axiom - commutative axiom of addition and multiplication - associative axioms of addition and multiplication
if two sets have no elements in common
properties of a rectangle
Axioms
x is less than y

13. Set of solutions to an equation
solution set
right triangle
cylinder
obtuse angle

14. ?
the third side
properties of a rhombus
relation
and

15. Angles that equal 180 degrees
approx square roots
supplementary angles
properties of a rhombus
the perpendicular distance

16. 5-12-13
null set
right triangle
y intercept
combinations

17. All odd numbers end in the digits of
1 - 3 - 5 - 7 - 9
(y-x/x)100
belongs to
equilateral triangle

18. R²
diameter of circle
the sum of its digits is divisible by 9
x is less than y
properties of a rectangle

19. (amount of increase/original amount) x 100
rectangular solid
altitude of a triangle
the percent of increase
the last digit is either 0 or 5

20. 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*)
closed set
combinations
1 - 3 - 5 - 7 - 9
Axioms

21. ?
is a subset of
x - y
coinciding lines
circle

22. A collection of anything - numbers - letters - objects - etc. written within brackets { } two are equal if they contain the same elements.(order does not matter)
never divide by zero
set
permutations
inconsistent lines

23. Two tangents to a circle from the same point outside of the circle are always
right triangle
equal
two solutions
relation

24. 180°
hemisphere
even
always positive or zero
straight angle

25. 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
the square of x
right triangle
properties of a square
22/7 or 3.14

26. Area= 1/2bh perimeter= a+b+c
radius of a circle
x<0
y-x
triangle

27. 1/x + 1/y x -y ? 0
even
x+y/xy
Axioms
expression of an even number

28. C²= a²+b² and angle x and y are equal to 90°
equilateral triangle
two solutions
right triangle
relation

29. Any integer is divisible by 9 - if
x and y
standard deviation
approx sums
the sum of its digits is divisible by 9

30. Any integer is divisible by 6 if
isosceles triangle
x%
it is also divisible by 2 and 3
if two sets have no elements in common

31. x > y or y< x
circle
x is greater than y
1 - 3 - 5 - 7 - 9
x+y/xy

32. (x-y)(x-y) = (x-y)²
x²-2xy+y²
x<0
associative axiom of addition and multiplication
right triangle

33. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
relation
all acute angles are equal and all obtuse angles are equal
consistent lines
v(x2-x1)²+ (y2-y1)²

34. Wx>wy
w>0 and x>y
the last three numbers are divisible by 8
permutations
determining if a number is prime

35. Is the set of the first components of the ordered pairs.
hemisphere
1 - 3 - 5 - 7 - 9
equal to the slope of the other
domain of a relation

36. 1/y-1/x x -y ? 0
right triangle
x-y/xy
rectangle
x percent

37. Sum of two odd numbers is
even
3.16
diameter of circle
properties of a rhombus

38. Is the set of the second components of the ordered pairs
finding the union of sets
x percent
range of a relation
x>y>0 and w>z>0

39. Angles directly across each other are equal
probability
right triangle
vertical angles
straight angle

40. 3-4-5
circle
right triangle
belongs to
y intercept

41. If b²-4ac < 0 - there are
greater than c
slope of a line joining two points
±vx
no solutions

42. ?
22/7 or 3.14
similar triangles
x - y
always positive or zero

43. Product of two odd numbers is
vertical angles
polygon
odd
x + y

44. x younger than y
approx products
x - y
pythagorean theorem
v3/2 or .87

45. Product of an even number and any other number is
similar triangles
y angle< x angle
the sum of parts
even

46. The percent increase from x to y (y>x)
properties of parallelograms
diameter of circle
(y-x/x)100
w<0 and x>y

47. If two lines are perpendicular - the slope of one is the
x+y/xy
negative reciprocal of the other
expression of an odd number
average

48. All even numbers end in the digits of
the sum of parts
22/7 or 3.14
find the intersection of two sets
0 - 2 - 4 - 6 - 8

49. 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}
the perpendicular distance
when finding a solution set
a?n
x + y

50. 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)
x%
rectangular solid
simultaneous equations
probability