Solve the problem.Using the digits 0 through 9, how many 7-digit serial numbers can be made if the the first digit must be a 1, the last digit must be a 0, and no digits may be repeated?
A. 6720
B. 8
C. 56
D. 30,240
Answer: A
Mathematics
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Evaluate the improper integral or state that it is divergent.
A. 
B. 
C. Divergent
D. 
Mathematics
Find the indicated fractional part.
of 20
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the perimeter of the polygon with the following vertices. Round to the nearest hundredth. A(1, 1), B(2, 5), C(5, 4), D(4, 2), E(3, 2)
A. 10.52 B. 12.76 C. 11.52 D. 14.64
Mathematics
This frequency table gives the distribution of ages of 100 people in a small town.
How many people are:Less than 30 years of age
A. 22 B. 29 C. 36 D. 18
Mathematics