Solve the problem.The library is to be given 5 books as a gift. The books will be selected from a list of 21 titles. If each book selected must have a different title, how many possible selections are there?
A. 20,349
B. 5.109094217e+19
C. 4.257578514e+17
D. 2,441,880
Answer: A
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Find all the local maxima, local minima, and saddle points of the function.
A. f(0, 0) = -3, test is inconclusive B. f(3, 0) = -3, local minimum; f(0, 3) = -3, local minimum C. f(3, 3) = 159, local maximum D. f(0, 0) = -3, saddle point; f(3, 3) = 159, local maximum
Find the area.
A. 169 ft2 B. 128 ft2 C. 100 ft2 D. 130 ft2
Suppose f and g are functions that are differentiable at ?? src="https://sciemce.com/media/3/ppg__cognero__3.2_The_Product_and_Quotient_Rules__media__0629d836-2971-4cbb-8b51-912570910c5c.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_f72dbf89da1f4ea3818a5a9b1" />, 
and that 
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A. 
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Give the converse of the statement, “If it is an orange, then it is a fruit.”
What will be an ideal response?