#### 题目列表

The circle above has a center O. ∠AOB=∠BOC

#### Quantity A

The area of triangle AOB

#### Quantity B

The area of the shaded region

The circumference of the circle with center O is 15π. LMNO is a parallelogram and c = 108. What is the value of d ?
15 marbles are placed in a bowl; some are red, and some are blue. If the number of red marbles is 1 more than the number of blue marbles, what is the probability that a marble taken from the bowl is blue?
If △(x) = 10x – 1, what is △(5) – △(3) ?

#### Quantity A

The largest odd factor of 78

#### Quantity B

The largest prime factor of 78

At a recent dog show, there were 5 finalists. One of the finalists was awarded "Best in Show" and another finalist was awarded "Honorable Mention." In how many ways could the two awards be given out?

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Company X spends $40,000 per year on advertising for product A and$30,000 per year on advertising for product B. The company spends $15,000 on advertisements that advertise both product A and B as a system. The company spends$90,000 total on advertising for all of its products.

#### Quantity A

The total amount the company spends advertising products other than products A and B.

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