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If $$s$$ and $$t$$ are different positive integers, which of the following guarantees that $$\frac{t}{s}$$ is an integer?
For all integers $$x$$ greater than $$1$$, the function $$p(x)$$ is defined as the number of different prime factors of $$x$$. What is the value of $$\frac{p(12)}{p(9)}$$?
In 1961, Julia Child published Mastering the Art of French Cooking, frequently described as revolutionary. According to legend, Child inspired Americans to exchange their bland cooking for French cuisine's rich flavors. Yet Child's book was hardly singular among cookbooks. One publishing catalog lists almost as many books about French cooking in the decade before Child's book as in the decade after. While Child's book influenced a particular American cohort, its effect on the American publishing industry was minimal, a fact at odds with popular assumptions both about publishers and about Child's importance. We might expect Child's success to foster many imitations. Instead American cookbooks pursued themes popular before Child's book was published, including a growing interest in the American cooking styles allegedly vanquished by Child.
The passage suggests that the "popular assumptions"
Which of the following. if true. could be most plausibly cited as evidence in support of the "legend"?
The passage implies that Du Bois attributed which of the following beliefs to Spencerian sociologists?



The figure shows part of a circle with two inscribed regular polygons—one with $$6$$ sides and one with $$12$$ sides. The two polygons have $$6$$ vertices in common. The radius of the circle is $$r$$, and the area of the $$6$$-sided polygon is $$x$$.

Quantity A

$$\pi r^2-x$$

Quantity B

$$24$$ times the area of the shaded region $$S$$


$$n$$ is the number of $$8$$-digit positive integers consisting only of the digits $$1$$ and $$2$$, where the digit $$1$$ appears three times and the digit $$2$$ appears five times.

$$r$$ is the number of combinations of $$8$$ different letters taken $$3$$ at a time.

Quantity A

$$n$$

Quantity B

$$r$$


Quantity A

$$a$$

Quantity B

$$b+55$$




Two identical squares with sides of length $$s$$ are oriented as shown in the figure so that all the shaded triangular regions have the same area. If the sum of the areas of the shaded regions is $$A$$, what is the area of the unshaded region, in terms of $$s$$ and $$A$$?
Passwords for a certain computer consist of 5 symbols typed on a computer keyboard. Each password consists of one @ symbol, two # symbols, and two $ symbols, typed in any order. For example, @#$$# and $#$#@ are two different passwords for the computer.

Quantity A

The total number of different passwords for the computer

Quantity B

30




This morning Tom visited 6 Internet sites, and Andrew visited 8 Internet sites. The table shows the time, in minutes, spent visiting each site.

Quantity A

The standard deviation of the 6 times shown for Tom

Quantity B

The standard deviation of the 8 times shown for Andrew


At a certain dealership, $$\frac{2}{5}$$ of the trucks have four-wheel drive, and $$\frac{1}{3}$$ of the vehicles that have four-wheel drive are trucks. Of the vehicles that are trucks or have four-wheel drive, what fraction are trucks that have four-wheel drive?
On a bookshelf, Pat arranges 7 different books: 2 history books, 3 philosophy books, and 2 science books. If Pat arranges the books so that the history books are next to each other, the science books are next to each other, and the philosophy books are next to each other, how many different arrangements are possible?

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