In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability of the event from a random sample of 10 students who are physics majors.Exactly 2 belong to an ethnic minority.
A. .1990
B. .1929
C. .2156
D. .0028
Answer: A
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Solve the problem.Let a = 2i + 3j and b= -5j. Find 
b ? a.
A. 6
B. 
C. -15
D. -10
Find the radius or measure of the central angle as indicated. Round your answer to two decimal places when necessary.Find the radius of a circle in which a sector of area 69 ft2 has a central angle of 4.
A. 11.75 ft B. 5.87 ft C. 138 ft D. 552 ft
Solve the problem.Which of the following is a discrete fair division problem?
A. Dividing a tropical island. B. Dividing a cheese pizza. C. Dividing a gallon of ice cream. D. Dividing an antique car collection. E. none of these
Use the binomial theorem to expand the expression.(3x2 + 4)3
A. 27x3 + 108x2 + 144x + 64 B. 81x8 + 27x6 + 108x4 + 144x2 + 64 C. 27x6 + 108x4 + 144x2 + 64 D. (9x4 + 24x2 + 16)3