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ä¾1ï¼A quarter, a dime, a nickel, and a penny are placed in a box. One coin is
drawn from the box and put back before a second coin is drawn. In how many
different ways can two coins be drawn so that the sum of the values of the two
coins is at least 25 cents?
A. 9 B. 7 C. 6 D. 5 E. 4
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ä¾2ï¼Which of the following fractions has an equivalent decimal that is a
terminating decimal?
A. 10/189 B. 15/196 C. 16/225 D. 25/144 E. 39/128
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ä¾3ï¼There are three type of pencils, J, K, and L, cost $0.05, $0.10, and$0.25
each, respectively. If a box of 32 of these pencils costs a total of $3.40 and
if there are twice as many K pencils as L pencils in the box, how many J pencils
are in the box?
A.6 B.12 C.14 D.18 E. 20
对äºâthere are twice as many A as
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ä¾4ï¼If x and y are positive integers, is x>y?
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ä¾5ï¼If set S consists of ten distinct positive integers, which of the
following could be a member of S?
I. The mean of the members of S
II. The median of the members of S
III. The mode of the members of S
(A) None
(B) I only
(C) II only
(D) I and III
(E) II and III
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