What is the most efficient way to determine if A = 7 X 13 is a prime number?
a. Multiply 7 by 13. Then check to see if the product has any factors besides 1 and itself.
b. Deduce that A must be prime because the product of two prime numbers must be another prime number.
c. Deduce that A cannot be prime because it is shown that 7 and 13 are two of its factors.
d. Multiply 7 by 13. Then apply divisibility rules for 7 to the product.
Ans: c
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Rwhere R is the interior of the ellipsoid 
A. 42?
B. 14?
C. 
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D. 
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Express the number in terms of j (if necessary, round the result to three significant digits).
A. 
j
B. 
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D. -
j
E. 
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Convert the area as indicated.101 square millimeters to square meters
A. 0.00101 m2 B. 0.101 m2 C. 0.000101 m2 D. 0.0101 m2
Solve the system using Gaussian elimination.
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A. 
B. 
C. 
D. 
E. 