10. A right circular cylinder with radius 5 and height 4 has volume \[v\]. In terms of \[v\], what is the volume of a right circular cylinder with radius 5 and height 8?
(A) \[v + 4\]
(B) \[2v\]
(C) \[4v\]
(D) \[6v\]
(E) \[8v\]

11. If k, n and r are integers, let k p3sec3.11(n,r) be defined to be true only if n < k < r . If -2p3sec3.11(n,r) is true, which of the following could be a possible value of n ?
I. -3
II. -1
III. 3

12. If 20 percent of \[x\] equals 80 percent of \[y\], which of the following expresses \[y\] in terms of \[x\]?
(A) \[y = 16%\] of \[x\]
(B) \[y = 25%\] of \[x\]
(C) \[y = 60%\] of \[x\]
(D) \[y = 100%\] of \[x\]
(E) \[y = 400%\] of \[x\]

13. If \[x, y\] and \[z\] are positive integers such that the value of \[x + y\] is even and the value of \[(x + y)^2 + x + z\] is odd, which of the following must be true?
(A) \[x\] is odd
(B) \[x\] is even
(C) If \[z\] is even, then \[x\] is odd
(D) If \[z\] is even, then \[xy\] is even.
(E) \[xy\] is even.

14. If \[0 < x < 1\], which of the following statements must be true?
I. \[x^2 > x^3\]
II. \[x > \frac{x}{2}\]
III. \[x > x^3\]
(A) I only
(B) II only
(C) I and II only
(D) I and III only
(E) I, II, and III
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