Zarrolou
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1. w+2 >0 then w> 2 Not sufficient
2. w^2 > 1 then w >1 or w < 1. Not sufficient
Combining 1 & 2, we get 2 < w < 1 OR w>1.(<you missed this interval)
E as yo ...

Zarrolou
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The least possible value should be as big as possible and negative.
The biggest value is obtain through the moltiplication of the biggest values (10,10)
If we pick 10 x20 times however the resu ...

Zarrolou
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ab can have 2 values:
1)a>b ab>0
ab=ba
2)a<b
a+b=ba
As you can see in case 2 the equality is true. So if we know that
ab=ba
we must be in the second case.
keep in m ...

Zarrolou
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P*(85/100)=68$ [85/100 means 15% discount]
P=80$ original price
Final price = P*(85/100)*(125/100)=68*(125/100)=85$
Difference = 8580 = 5$

Zarrolou
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Basically the question asks how many 5*2 there are in N, so that N is divisible by (5*2)^m
The problem now comes down to how many 5s there are in N, because clearly the number of 2s will be greater s ...

Zarrolou
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2^x2^(x2)=3(2^13) x=?
I can take this:
2^x(12^(2))=3*(2^13)
2^x(11/4))=3*(2^13)
2^x(3/4)=3*(2^13)
The first part:
2^x(3/4) = 2^x(3/(2^2)) = 3*(2^x/2^2) = 3*2^(x2)
I hope the last pa ...

Zarrolou
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a+b+c+d+e>=150
If a,b,c,d,e each is multiple of 10; the least sum of 5 different integers, multiples of 10, is:
0+10+20+30+40=100
Statement 1 is not sufficient.
(check this http://www.b ...

Zarrolou
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In this sentence there is an action that goes on in the past, for a long period of time; then there is another action that "stops" it.
This first one requires a Past Perfect, the second req ...

Zarrolou
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IMO A
b) by skimming along the top of the atmosphere, proponents of a proposed new style of aircraft say it could fly between most points on Earth in under 2 hours
"by skimming" refers t ...

Zarrolou
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IMO B.
All of the following, if true, explain the rise in revenues of Innside Holiday, EXCEPT:
B. The Innside Holiday Group's revenues from its restaurant and spa increased after its transformation ...

Zarrolou
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maybe C

Zarrolou
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"because of diminishing" is wrong, out B and E.
"respiratory system in dealing" is unidiomatic, out C.
We are down to A and D:
A. an especially serious pollutant because it dimi ...

Zarrolou
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FACT: people suffering from this syndrome consumed dairy products in large quantities.
CONCLUSION: to avoid B.S. reduce consumption of dairy products
The study's conclusion is based on which of t ...

Zarrolou
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The answer is D.
5+x<4
5+x>=0, x>=5
So we can split the absolute value in 2 cases:
1)Condition: x>=5 (x is positive)
5+x<4 x<9
2)Condition: x<4 (x is negative)
+5 ...

Zarrolou
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FACT 1: income of the poor has increased 6%.
FACT 2: income of the others has increased 13%.
CONCLUSION: standard living conditions have not improved.
We are looking for an answer that supports t ...
