GRE math

Question 1

a^2 x a^3

Answer 1

a5

Question 2

a^9 / a^2

Answer 2

a^7

Question 3

(a^2)^4

Answer 3

a^8

Question 4

a^0

Answer 4

1

Question 5

m^-s

Answer 5

1/m^s

Question 6

m^(x/y)

Answer 6

(y square root m)^x

Question 7

n^(1/2)

Answer 7

square root n

Question 8

square root of 2

Answer 8

1.4

Question 9

square root of 3

Answer 9

1.7

Question 10

Division by zero

Answer 10

Can’t be done

Question 11

Prime factorization:

Answer 11

210= 2 x 105 = 2 x 3 x 35 = 2 x 3 x 5 x 7

Question 12

Like radicals can be

Answer 12

Added/subtracted

Question 13

a/b / c/d =

Answer 13

a/b x d/c

Question 14

2/3 reciprocal

Answer 14

3/2 > 1 & 2/3

Question 15

-2/3 reciprocal

Answer 15

-3/2 < 1 & -2/3

Question 16

(1/2)^2

Answer 16

1/4 < 1/2

Question 17

(-1/2)^2

Answer 17

1/4 > 1/2

Question 18

Distance

Answer 18

Speed x time

Question 19

Speed

Answer 19

Distance x time

Question 20

Time

Answer 20

Quantity/Rate

Question 21

When can you average averages?

Answer 21

Only if an equal number of terms in each set

Question 22

A U B

Answer 22

Both A & B

Question 23

|A U B|

Answer 23

|A| + |B| - |A xUx B|

Question 24

How many ways are possible?

Answer 24

Each space must be filled (ie in 1st place 7 options, in 2nd place 6 options)

Question 25

P(A or B)=

Answer 25

P(A) + P(B) - P(A + B)

Question 26

Rectangle area

Answer 26

LxW

Question 27

Rectangle perimeter

Answer 27

2L + 2W

Question 28

Rectangle volume

Answer 28

LWH

Question 29

Square area

Answer 29

s^2

Question 30

Square perimeter

Answer 30

4s

Question 31

Square volume

Answer 31

H x S^2

Question 32

Circle area

Answer 32

Pi x r^2

Question 33

Circle circumference

Answer 33

2 x pi x r

Question 34

Circle volume

Answer 34

Pi x r^2 x h

Question 35

Parallelogram area

Answer 35

Bh

Question 36

Parallelogram perimeter

Answer 36

sum of sides

Question 37

Parallelogram volume

Answer 37

BhH

Question 38

Sum of interior angles of a polygon

Answer 38

(n-2) x 180 (n = number of sides)

Question 39

Sum of angles on a line

Answer 39

180

Question 40

Sum of complimentary angles

Answer 40

90

Question 41

Sum of supplementary angles

Answer 41

180

Question 42

Sum of angles in a triangle

Answer 42

180

Question 43

In crossing parallel lines what angles are equal?

Answer 43

Across from each other

Question 44

In isosceles triangle what angles are equal?

Answer 44

Adjacent to equal sides

Question 45

30-60-90 rule

Answer 45

sides: x, 2x, x root 3

Question 46

45-45-90 rule

Answer 46

sides: x, x, x root 2

Question 47

Triangle side rules

Answer 47

3-4-5; 5-12-13; 7-24-25; 8-15-17

Question 48

If a & b are angles inside a triangle what is the outside angle across?

Answer 48

a+b

Question 49

Area of sector in a circle

Answer 49

n/360(pi r^2); n is degree of angle

Question 50

Slope

Answer 50

m = (Y2-Y1)/(X2-X1)= rise/run

Question 51

Equation of a line

Answer 51

y = mx + b; m= slope, b= y intercept

Question 52

Cylinder volume

Answer 52

Pi x r^2 x h

Question 53

Cylinder surface area (lateral)

Answer 53

2 x pi x r x h

Question 54

Total surface area

Answer 54

(2 x pi x r^2) + (2 x pi x r x h)