1 A brokerage house regularly reports the behavior of a group of 20 stocks, each stock being reported as up, down, or unchanged How many different reports can show seven stocks up, five stocks down, and eight stocks unchanged 2 An investment advisory service rates investments as A, AA, and AAA On a...

1. A brokerage house regularly reports the behavior of a group of 20 stocks, each stock being...

Question:

1. A brokerage house regularly reports the behavior of a group of 20 each stock being reported as "up," "down," or "unchanged." How many different reports can show seven up, five down, and eight unchanged?
2. An investment advisory service rates investments as A, AA, and AAA. On a certain week, it rates 15 investments. In how many ways can it rate five investments in each of the categories?
3. How many eight-letter words consist of two Rs, one I, four Fs, and one A?
4. How many 10-letter words consist of one R, three As, four Zs, one M, and one T?
5. In how many ways can three Forever stamps, two 20¢ stamps, and four 1¢ stamps be pasted in a row on an envelope?
Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...