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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. N= number of objects (order matters!!!) k= rate at a time nPk= n!/(n-k)! (remember to cancel common numbers)
x>y
-y
permutations
it is also divisible by 2 and 3
2. 180°
right triangle
even
1 - 3 - 5 - 7 - 9
straight angle
3. x>z
x>y and y>z
straight angle
semicircle
null set
4. 1/x + 1/y x -y ? 0
all acute angles are equal and all obtuse angles are equal
x + y
x+y/xy
perpendicular
5. 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
perpendicular bisectors
the percent of increase
if the last digit of the number is 0 -2 -4 -6 -8
standard deviation
6. Is the relation with ALL ordered pairs REVERSED.
right triangle
x - y
inverse of a relation
simultaneous equations
7. In transversals
vertical angles
all acute angles are equal and all obtuse angles are equal
straight angle
x>y
8. V10
x-y/xy
3.16
odd
it is also divisible by 2 and 3
9. A/A¹ = B/B¹= C/C¹
all acute angles are equal and all obtuse angles are equal
simultaneous equations in 2 unknowns
similar triangles
approx square roots
10. Between 90° and 180°
x>y>0 and w>z>0
is a subset of
obtuse angle
x + y
11. Sin 30°
1/2
triangle
(x-y/x)100
midpoint of a line segment joining 2 parts
12. The quotient of any quantity (except 0) divided by zero is infinity
never divide by zero
range of a relation
right triangle
n percent less than x
13. Sum of an odd and an even number is
right triangle
odd
area of a triangle
hexagon
14. The difference between x and y
hemisphere
obtuse angle
the last three numbers are divisible by 8
x - y
15. A chord through the center of the circle
diameter
x - y
equal
no solutions
16. The point where the line crosses the y-axis - x will always = 0 in this case
permutations
right triangle
x and y
y intercept
17. Parallel and never intersect - they have no solution at all - they are parallel with the same slope
x>y
vertical angles
similar triangles
inconsistent lines
18. Product of an even number and any other number is
the percent of increase
even
right triangle
determining if a number is prime
19. 7-24-25
right triangle
180 degrees
a<x<b
expression of an odd number
20. xw> yz
xy>0
perpendicular
x>y>0 and w>z>0
x<0
21. (x+y) (x-y)
x²-y²
the last digit is either 0 or 5
altitude of a triangle
y intercept
22. Pairs of opposite angles formed by the intersection of two straight lines. always equal to each other
the percent of decrease
equal
simultaneous equations in 2 unknowns
vertical angles
23. When two parallel lines are crossed by a third straight line (transversal) - then
all acute angles are equal and all obtuse angles are equal
x>y>0 and w>z>0
odd
a+b+d=c+d
24. Any integer is divisible by 4 - if
±vx
the last two digits of the number make a number that is divisible by 4
itself
right triangle
25. 2k
right triangle
expression of an even number
xy
area of a triangle
26. x younger than y
x - y
polygon
x-y/xy
permutations
27. | |
cylinder
parallel
equilateral triangle
expression of an even number
28. V3
even
simultaneous equations
itself
1.7
29. x(y-z)
x + y
circle
1 - 3 - 5 - 7 - 9
xy-xz
30. Any arc length is less than
360 degrees
x + y
triangle or straight line
odd
31. x less than y
y-x
(x/100)m= n
b+d>c+e
x is greater than y
32. The length of a segment whose endpoints are (x1 -y1) and (x2 -y2)
rectangle
inscribed angle
v(x2-x1)²+ (y2-y1)²
belongs to
33. C times as old as john
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183
34. x²
expression of an even number
the square of x
the last digit is either 0 or 5
x>y>0 and w>z>0
35. Diagonal= sv2
x²+ 2xy+y²
triangle
and
diagonal of a square
36. 180°
triangle or straight line
even
hexagon
parallel
37. Volume=lwh surface area= 2wh + 2hl + 2lw
the sum of parts
permutations
chord
rectangular solid
38. The percent decrease from x to y ( y<x)
one solution
(x-y/x)100
consistent lines
times
39. Is - as - was - has - cost
right triangle
equal to the sum of the measures of the remote exterior angles
equals
any variable
40. Area= 1/2bh perimeter= a+b+c
solution set
triangle
0 - 2 - 4 - 6 - 8
right triangle
41. Two tangents to a circle from the same point outside of the circle are always
equal
x is less than y
radius
never divide by zero
42. 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)
right triangle
probability
obtuse angle
x + y
43. x/100
when finding a solution set
x intercept
probability
x percent
44. (x1+ x2/2) - (y1+y2/2) Each coordinate of the midpoint is equal to the average of the corresponding cordinates of the endpoints
xy + xz
negative reciprocal of the other
straight angle
midpoint of a line segment joining 2 parts
45. If b²-4ac < 0 - there are
no solutions
x>y and w>z
area of a triangle
obtuse angle
46. Any number squared or raised to an even power is
1
always positive or zero
1.7
xy< 0
47. (x+y)(x+y)= (x+y)²
a<x<b
+y
x²+ 2xy+y²
odd
48. V2
closed set
1.4
y angle< x angle
parallel
49. The lines that divide each angle of the triangle into two equal parts. these lines meet in a point that is the center of a circle inscribed in the triangle.
angle bisector
the last digit is either 0 or 5
y angle< x angle
and
50. ?
belongs to
the percent of decrease
properties of parallelograms
x²-y²