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5000!item!187;#058&004365 For every integer k from 1 to 10, inclusive, the kth term of a certain sequence is given by T is the sum of the first 10 terms in the sequence, then T is . If (A) greater than 2
(B) between 1 and 2
(C) between 1/2 and 1
(D) between 1/4 and 1/2
(E) between 1/4
Three grades of milk are 1 percent, 2 percent, and 3 percent fat by volume. If x gallons of the 1 percent grade, y gallons of the 2 percent grade, and z gallons of the 3 percent grade are mixed to give x + y + z gallons of a 1.5 percent grade, what is x in terms of y and z ?
(A) y + 3z
(B) (y + z) /4
(C) 2y + 3z
(D) 3y + z
(E) 3y + 4.5z
A certain stock exchange designates each stock with a one, two, or threeletter code, where each letter is selected from the
26 letters of the alphabet. If the letters may be repeated and if the same letters used in a different order constitute a different code, how many different stocks is it possible to uniquely designate with these codes?
作作作作作作作作作If the letters may be repeated and if the same letters used in a different order constitute a different code, 作作one letter26作
three letters26x26x26作 total=18,278
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- Winter '05