請各位幫幫我解決prep裡面的幾題

yummysteve

41.    5676-!-item-!-187;#058&004686

All of the stocks on the over-the-counter market are designated by either a 4-letter or a 5-letter code that is created by using the 26 letters of the alphabet.  Which of the following gives the maximum number of different stocks that can be designated with these codes?

 

(A) 2(26^5)

(B) 26(26^4)

(C) 27(26^4)

(D) 26(26^5)

(E) 27(26^5)選C

為什麼會有27出現英文字母不是只有26嗎?還是我腦殘?

85.    9735-!-item-!-187;#058&006716

At the end of the first quarter, the share price of a certain mutual fund was 20 percent higher than it was at the beginning of the year.  At the end of the second quarter, the share price was 50 percent higher than it was at the beginning of the year. What was the percent increase in the share price from the end of the first quarter to the end of the second quarter?

 

(A) 20%

(B) 25%

(C) 30%

(D) 33%

(E) 40%選B

96.    10591-!-item-!-187;#058&007292

According to the directions on a can of frozen orange juice concentrate, 1 can of concentrate is to be mixed with 3 cans of water to make orange juice.  How many 12-ounce cans of the concentrate are required to prepare 200 6-ounce servings of orange juice?

 

(A)  25

(B)  34

(C)  50

(D)  67

(E)  100選B

裡面ounce的單位不一樣 有點不知道他在問什麼

98.    10689-!-item-!-187;#058&007329

If x is a negative integer, which of the following expressions has the LEAST value?

 

(A) x2 - 0.50

(B) x2 - 0.51

(C) x3 - 0.502

(D) x3 - 0.511

(E) x4 - 0.512

選D不曉得他LEAST value是什麼意思

101.  10830-!-item-!-187;#058&007415

If xy + z = x(y + z), which of the following must be true?

 

(A) x = 0 and z = 0

(B) x = 1 and y = 1

(C) y = 1 and z = 0

(D) x = 1 or y = 0

(E) x = 1 or z = 0

選E 這題考點不知道在哪?

請各位牛人賜教 拜託拜託 考試在即 謝謝