... XY = 2
X
3
Y
3
Z
3
= X
4
Y
5
Z
3
0
Z
The best answer is A.
Take X
3
Y
3
Z
3
= X
4
Y
5
Z
3
and divide both sides by Z
3
: X
3
Y
3
= X
4
Y
5
Replace XY with 2: 2
3
= 2
4
Y ... the easiest way here is to write the expressions in the following form:
A = 3
3
x 3
3
B = (2 x 3)
3
= 2
3
x 3
3
, we can see that the expression in column A is greate...
... answer is D.
75.
A: X
B: 9 /39
AI: 13
111
X
X
X
The best answer is C.
13
3
13
3
13
111
X
X
X
X
X
.
Take the expression in column B: 9 /39 = 3/ 13 and so both columns are
equal ... another and so the answer is C.
29.
A: 0.6
3
B: 0.6
1 /3
The best answer is B.
0.6 is also 3/ 5.
Column A = (3/ 5)
3
= 9/125.
Column B = (3/ 5)
1 /3
we know...
...
Question
s
Wor
Time
Work
s
Wor
Time
Work
Data
2
ker
2
2
1
ker
1
1
Question
Time
Data
39
63
13
45
7
Time =
135
7
39
134 5 63
minutes.
Kinky mixed questions
24.
A: 120 degrees
B: The measurement ... solution is (A + B + B) /3 =
3
2BA
and therefore
column B is greater since its denominator is smaller.
12.
A: The average (arithmetic me...
...
A: (33 3) (32 7)
B: (32 9) (33 1)
The best answer is B.
The best way to solve this question is by using the formula:
(X - Y)(X + Y) = X
2
– Y
2
.
Column A = (33 0 + 3) (33 0 – 3) = 33 0
2
– 3
2
. ... is greater.
17.
A:
3
7
B:
4
3
1
3
1
5
The best answer is C.
Multiply both columns by 3 .
Column A = 7.
Column B = 7
4
7
4
4
3
116
4
3
1
3
1
533
4
3...
... 4.
4
Y
= 64 Y = 3.
Column A = 4
3
= 64.
Column B = 3
4
= 81.
Column B is greater than column A.
36 .
A: A: The surface area of a cube whose volume is 34 3
B: 34 3
The best answer ... Z + 125 = 36 0
o
X + Y + Z = 36 0 – 125 = 235
o
.
We can see that column A is greater than column B.
35 .
A: X
3
B: Y
4
AI: 3
X
= 81
4
Y
= 64
The best answer is B....
... answer and the right answer is D.
5.
A:
55
6
3
11
33
B: 22
The best answer is A.
Simplify the expression in column A:
33 311
3
11
31 1
3
11
33
55
66
55
6
and
therefore column ... X
B: 3
AI:
X2
3
1 936 1
The best answer is B.
Simplify the expression:
XXX 2
3
2
2
3
2
3
19191919191 936 1
.
2 /3 = 2X X = 1 /3 and therefor...
... therefore the answer cannot be determined.
18.
A: 27
3
B: 3
27
The best answer is B.
Column A can be written as 3
3x3
= 3
9
and thus column B is greater.
19.
The best answer ... The
absolute value of A is smaller than that of B and therefore it is larger.
37 .
A: -0.0 033
B: -0.00 033 3
The best answer is B.
In negative numbers, the smaller the number is in...
...
23.
A: The product of all the positive divisors of 23
B: The sum of all the positive divisors of 23
The best answer is B.
23 has two divisors, 1 and 23.
A = 1 x 23 = 23.
B = 1 + 23 = ... greater.
13.
A: A + B
B: 35
AI: AB = 35 .
The best answer is D.
From the additional information we can conclude that there are two possible
combinations: A =35 , B=1 or A=7...