K.
- The positive integer x! is defined as the product of all the positive integers less than or equal to x. For example, 4! = 1(2)(3)(4) = 24.
What is the value of the expression ?
A. 1
B. 2
C. 4
D. 72
E. 144
- Alfred spent $25 to purchase 65 stamps. If each stamp costs either $0.20 or $0.45, how many of the more expensive stamps did he
purchase?
F. 17
G. 48
H. 56
J. 65
K. 125
- A square with a side length of 2 feet is circumscribed, as shown below.
What is the area of the shaded region, in square feet?
A. π
B. π−4
C. 2π−1
D. 2π−2
E. 2π−4
