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$$(4^13-4^13)\over{4^11}=$$
If a =$$(27)(3^{-2})$$and x =$$(6)(3^{-1})$$, then which of the following is equivalent to$$(12)(3^{-x})$$ x $$(15)(2^{-a})$$?
Sandy has a husband and 2 children. She brings at least 1 member of her family to a diner for lunch every day. The diner offers 10 lunch specials. If no one orders the same thing, how many different orders can Sandy`s family make for lunch?

Indicate ALL possible values.


In the figure above, if ABCD is a rectangle, what is the sum of the marked angles?

_____degrees
GRE、gre题库、gre模考、gre考满分
If the probability of choosing 2 red marbles without replacement from a bag of only red and blue marbles is$$\frac{3}{55}$$and there are 3 red marbles in the bag, what is the total number of marbles in the bag?
All first-year students at Red State University must take calculus, English composition, or both. If half of the 2,400 first-year students at Red State University take calculus and half do not, and one-third of those who take calculus also take English composition, how many students take English composition?
If$$\frac{15!}{3^m}$$is an integer, what is the greatest possible value of m ?
Since a large number of the ores frequently located in riverbeds are (i)_____on the earth`s surface, where the processing of chemicals is less costly, recovery of underwater ores is not likely to become a (ii)_____procedure.
It would be (i)_____for our leaders, given their responsibilities as democratically elected officials, to neglect to do everything they could to (ii)_____an entirely (iii)_____problem.
Despite her mentor`s advice that she attempt to sound consistently _____, the graduate student often resorted to using slang when presenting significant parts of her thesis, her habitual speech patterns overriding her years of learning.
Although she felt Steve (i)_____the subtlety of the delicious stew recipe with his addition of the sweet potato, she thought the pungent onion (ii)_____the otherwise (iii)_____taste combination.
At first, a still-life painting can appear quite (i)_____, its focus on such everyday objects as flowers or fruits apparently uninspired. In the hands of (ii)_____painter, however, careful attention to slight shifts of color and texture can lead to a truly (iii)_____ and exemplary painting.
The leaders of Ukraine`s "Orange Revolution" were a study in contrasts. At the center of the political storm stood Viktor Yushchenko, his once-handsome face turned into a hideous, (i)_____mask by dioxin poisoning; but, at his side, no one could miss the (ii)_____Yulia Tymoshenko, soon to become the world`s only prime minister to adorn the covers of fashion magazines.
Although she was such a bad-mannered child that she was sent to a boarding school, as an adult she is the very model of _____.
Politicians sometimes appear to act in a manner that is almost _____; however, when all the information is released after the fact, it is apparent that they were acting according to a deliberate plan.
Forced to take an alternate road when a massive oil spill closed the highway, the two-hour detour made their already arduous trip even more _____.
Though many of her contemporaries found her odd, Ella Wilkins is now much admired for her _____spirit, especially her willingness to reject prevailing feminine roles and to travel to foreign lands alone.
Microfiber synthetics have been taking the place of natural fibers in an ever-increasing number of clothes because they provide the same durability and deplete fewer natural resources. A shirt made of microfiber synthetics is, however, three times as expensive to produce as a natural-fiber shirt. It follows that the substitution of microfiber synthetic clothes for natural-fiber clothes is, at this time, not recommended from a financial standpoint.

Which of the following statements, if true, most seriously weakens the argument?
R is a circle with radius 6.

Quantity A

The ratio of the circumference of R to the radius of R

Quantity B

6


Quantity A

$$\frac{0.62}{0.124}$$

Quantity B

$$\frac{0.001}{0.0002}$$


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