... columns by
5
.
Column A = 7.
Column B = 6
5
.
1
9
5
.
1
81
5
.
1
52 .16
5
.
1
52 .16
5
.
1
2.16
.
And therefore column A is greater.
17.
A:
3
7
B:
4
3
1
3
1
5
The best ...
domesticated
AI: In a horse ranch 95 horses. 45 horses are domesticated and 55 are
brownish.
The best answer is B.
There are 55 brownish horses and therefore ( 95 – 5...
... Clark, each, toss a fair coin twice.
The best answer is C.
Column A = 0 .5 x 0 .5 = 0. 25.
Column B = 0 .5 x 0 .5 = 0. 25.
The columns are equal and therefore the answer is C.
27.
A: The probability ... (300/60 = 5) minutes to walk
6
5
meters.
His speed is 1/6 meters per minute = 10 meters per hour.
2 .5 Km = 250 0 meters.
The time it would take him to walk that distance...
... is B.
Rachael spends 1 /5 + (1/3)(4 /5) , which is (1 /5 + 4/ 15 = 7/ 15) of her allowance each
month. The rest, which is (1 – 1 /5 - 8/ 15 = 4/ 15) she saves up. 7/ 15 > 4/ 15 and
therefore the answer ... as Frank’s income.
Susan old income was 35% more than $100, thus $1 35.
Susan’s new income is 35% less than $1 35, which is 75. 87$
100
87 75
1 35$
100
65
.
We can s...
... isosceles triangle, one of the angles is 55
o
.
The best answer is B.
There are two possible angle arrangements in this circle: 55 , 55 , 70 or
55 , 62 .5, 62 .5. In both cases, the sum of the equal ... is 55 and so the fourth exterior angle is equal to
(180 – 55 = 1 25
o
).
X + Y + Z + 1 25 = 360
o
X + Y + Z = 360 – 1 25 = 2 35
o
.
We can see that column A is greater tha...
...
33311
3
11
311
3
11
33
55
66
55
6
and
therefore column A is greater than column B.
6.
A: 51 8
B: 728
The best answer is C.
Column A = 28 252 32 252 950 18 .
Column ...
3.
A:
121
11
15
16
3
1
5 2
X
XXX
B: 1
The best answer is C.
There is no other way, simplify the expression in column A:
1
15
456
11
11
15
4
3
1
121
11
15
16
3
1...
...
A: 2 .5 x 3 .5 x 8.8 x 4 .5
B: 5 x 3 .5 x 4.4 x 9
The best answer is B.
Don’t calculate, compare.
Simplify column B into: 2 .5 x 2 x 3 .5 x 4.4 x 4 .5
Simplify column A into: 2 .5 x 2 x 3 .5 x 4.4 ...
AI: -X - Y = 156
X = 2Y
The best answer is B.
Replace X with 2Y in the first equation to get: -2Y – Y = 156 Y = -52
The expression given can be simplified to:
253...
...
2
55
X
B:
2
5
X
AI: X < -2
The best answer is
Simplify each of the expressions.
A = 5
X+2
.
B = 5
2X
.
Plug in X = -4 for example.
A = 5
-2
= 1/ 25.
B = 5
-8
= 1/ (5
8
), ...
The best answer is B.
Divide both sides by 5
6
:
1 ? 5 – 5
-5
5
-5
? 4
4 is much greater than 5
-5
and therefore the answer is B.
52 .
A: (A + 4)
2
B: (A –...
... simplified.
5. 28222/1)14(2321432
55 555 552 555
XXXXXX
Compare the powers of both sides: 2X – 2 = 8X + 2 .5 6X = -4 .5
X = -3/4 and therefore X is greater.
45.
A: Y
B: ... greater.
21.
A: (5
X
)
3
B: 5
X
5
6
AI: 2 < X < 3
The best answer is B.
Pick up a number for X, for example X = 2 .5.
A = 5
2 .5 x 3
= 5
7 .5
.
B = 5
2 ....
... to arrange 5 people in 5 seats
B: The number of ways to arrange 5 people in 4 seats
The best answer is C.
Use the counting principle: If there are 5 seats the first seat has 5 possibilities, ... 104 + … + 150 ).
Y = (201 + 202 + 203 + 204 + … + 250 ).
Y – X = (201 – 101) + (202 – 102) + … + ( 250 – 150 ) = 100 + 100 + … + 100 =
100 x 50 = 5, 000. And therefore the answer i...