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OA is B

pls check the below link

http://www.beatthegmat.com/during-the-1 ... 65370.html

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randy's bar

"Randy's" bar serves customers every weeknight from 5 pm to 1 am. In Randy's bar "Silvermoon" beer is sold at a constant rate except during happy hour, from 6:30 to 7:30 pm, when the rate triples. If a keg of Silvermoon beer is half empty at 5pm on Monday, and two-thirds empty at...

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Sorry OA is D Source - Knewton OE is given below.. I'm unable to understand how it can be D The author of this argument concludes that, because an active chemical in an insecticide becomes inactive after 14 days of air exposure, the death of an insect that lands on a sprayed tree is not due to the i...

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thefts in texas shopping mall

Last year, of the reported thefts that occurred in shopping malls in Texas, the percentage that took place in digital electronic stores increased by two percent from the year before. Because most thefts do not result in the return of stolen goods, this increase likely resulted in a negative economic...

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x2 + y2

Is x^2 + y^2 > 100

1) 2xy < 100
2) (x+y)^2 > 200

OA - C

Can someone pls explain why B is not sufficient

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shankar.ashwin wrote:What is the value of (x^6+x^-6) ?

1) x^6 - x^-6 = 128
2) x^3 + x^-3 = 14

2 => x^3 + x^-3 = 14
squaring on both sides

=> (x^3)^2 + (x^-3)^2 + 2(x^3)(x^-3) = 196
=> x^6 + x^-6 = 194
So B is sufficient

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Guys apologies. There was a small mistake in the way I interpreted the problem. This problem does have some data missing to determine a finite solution. Now try this, 2 people A and B at opposite end of a road start walking towards each other at 10:00 a.m; they meet together at 11:20 a.m, Had A and...

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is x= x^2 1) x NOT = 0 2) x> 1 should D not be the answer actual ans .. A please explain from ques: is x = x^2 => is x(x-1) = 0 => is x = 0 or x = 1 st1: x is not 0 => x = 1 sufficient st2: x>1 we need to find whether x is 0 or 1, however, st2 tells us neither so insufficient. IMO - A Please correc...