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Test your basic knowledge |
GRE Math Strategies
Start Test
Study First
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
null set
n= mx/100
find the intersection of two sets
x + y
2. C²= a²+b² and angle x and y are equal to 90°
even
midpoint of a line segment joining 2 parts
the sum of its digits is divisible by 9
right triangle
3. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
v(x2-x1)²+ (y2-y1)²
y angle< x angle
hexagon
properties of a rhombus
4. The product of x and y
x + y
xy
polygon
angle inscribed in semicircle
5. x(y+z)
the last digit is either 0 or 5
xy + xz
diameter
acute angle
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)
similar triangles
equilateral triangle
angle
angle a and angle b = angle d
7. Is a subset of every set
triangle or straight line
right angle
approx sums
null set
8. x>0 and y>0 or x<0 and y<0
c x (john'S age)
equals
is a subset of
xy>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)
combinations
0 - 2 - 4 - 6 - 8
x-y/xy
x + y
10. 7-24-25
standard deviation
right triangle
equal
cube
11. If b²-4ac > 0 there are
two solutions
the percent of increase
-y
(y-x/x)100
12. In a triangle - the greatest angles lies
square
even
opposite the greatest side
right angle
13. Sum of two odd numbers is
reflex angle
equilateral triangle
c x (john'S age)
even
14. Volume= 2/3?r² surface area= 2?r² (w/o bases) or 3?r² (with bases)
the last two digits of the number make a number that is divisible by 4
implies
xy-xz
hemisphere
15. A pair of equations in two unknowns (each is graphed seperately and each is represented by a straight line)
triangle
simultaneous equations
inverse of a relation
right triangle
16. ?
22/7 or 3.14
then side b > side a
all acute angles are equal and all obtuse angles are equal
perpendicular
17. (amount of increase/original amount) x 100
angle a and angle b = angle d
x - y
the percent of increase
reflex angle
18. When the elements of a set are ordered pairs
relation
tangent
perpendicular
y intercept
19. 360°
the sum of parts
square
x is less than y
circle
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 -
1
determining if a number is prime
supplementary angles
x²-y²
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
inscribed angle
the perpendicular distance
isosceles triangle
x>y and w>z
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
properties of a square
range of a relation
a+b+d=c+d
odd
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}
simultaneous equations
right triangle
the last digit is 0
when finding a solution set
24. x older than y
angle inscribed in semicircle
right triangle
x + y
coinciding lines
25. Area= s² perimeter= 4s
expression of an odd number
isosceles triangle
square
1 - 3 - 5 - 7 - 9
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
circle
standard deviation
tangent
then side b > side a
27. ?
xy
and
the sum of its digits is divisible by 3
right triangle
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)
v3/2 or .87
rectangular solid
probability
y angle< x angle
29. V2
1.4
any variable
n percent less than x
right triangle
30. The point where the line crosses the x-axis - y will always = 0 in this case
x intercept
a?n
midpoint of a line segment joining 2 parts
two solutions
31. 180°
triangle or straight line
0 - 2 - 4 - 6 - 8
set
the last three numbers are divisible by 8
32. M?A = m?D m?B= m?E m?C=m?F and a/d=b/e=c/f
opposite the greatest side
finding the union of sets
one solution
similar triangles
33. The measure of an interior angle is
odd
isosceles triangle
negative
equal to the sum of the measures of the remote exterior angles
34. x +z > y+z
slope of a line joining two points
supplementary angles
a<x<b
x>y
35. V10
±vx
or
consistent lines
3.16
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
x percent
approx square roots
all acute angles are equal and all obtuse angles are equal
x + y
37. Is the set of the first components of the ordered pairs.
domain of a relation
right angle
closed set
expression of an even number
38. If b²-4ac < 0 - there are
straight angle
right triangle
no solutions
y intercept
39. The increase from x to y
y-x
expression of an even number
slope of a line joining two points
1.4
40. Any integer is divisible by 10 - if
central angle
the last digit is 0
all acute angles are equal and all obtuse angles are equal
obtuse angle
41. x > y or y< x
central angle
isosceles
w<0 and x>y
x is greater than y
42. 5-12-13
odd
a+b+d=c+d
the last three numbers are divisible by 8
right triangle
43. x < y or y> x
sphere
equilateral triangle
x is less than y
times
44. ?
perpendicular
equal to the slope of the other
x + y
1/2
45. Any line that connects two points on a circle.
chord
equal
belongs to
tangent
46. Ax= by + C
commutative axiom of addition and multiplication
x²-2xy+y²
simultaneous equations in 2 unknowns
x intercept
47. A°
diameter
1
angle a and angle b = angle d
n percent less than x
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.
finding the union of sets
central angle
x and y
right triangle
49. (x-y)(x-y) = (x-y)²
then side b > side a
x²-2xy+y²
x<0
simultaneous equations
50. The quotient of any quantity (except 0) divided by zero is infinity
never divide by zero
slope of a line joining two points
any variable
the last two digits of the number make a number that is divisible by 4