Solve the problem.An elevator has 4 passengers and 8 floors. Find the probability that no 2 passengers get off on the same floor considering that it is equally likely that a person will get off at any floor.
A. .610
B. .410
C. .910
D. .500
Answer: B
Mathematics
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Find the flux of the curl of field F through the shell S.F = -5x2yi + 5xy2j + z5k; S is the portion of the paraboloid 2 - x2 - y2 = z that lies above the 
A. 80
B. 
?
C. 80?
D. 10?
Mathematics
Evaluate the integral.
A. 
cos 81
B. 
(1 - cos 81)
C. 
(1 - cos 81)
D. 
cos 81
Mathematics
Find the exact value of the indicated trigonometric function of the angle ? in the figure. Rationalize the denominator where necessary.Find sin ?.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the area of the shaded sector. Round to one decimal place.
A. 15.7 m2 B. 471.2 m2 C. 32.9 m2 D. 235.6 m2
Mathematics