Many states conduct lotteries; a typical lottery payoff ticket is shown here. Assume there are 20 numbers chosen from a set of 80 possible numbers. What is the expectation for a three-spot game? Assume that the ticket cost $1.
3 SPOT GAMEMATCHPRIZE32$50$5?
A. $0.50
B. - $0.50
C. $0.78
D. - $0.39
E. $0.39
Answer: D
Mathematics
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Use properties to perform the calculations. Express answer in simplest form.
÷ 
A. - 
B. 
C. - 
D. 
Mathematics
Answer the question.If n is an even number, then which of the following statements is true?
A. The equation xn - 1 = 0 has an odd number of nonreal roots. B. The equation xn - 1 = 0 has n - 1 roots. C. The equation xn - 1 = 0 has exactly two real roots. D. The equation xn - 1 = 0 has an odd number of real roots.
Mathematics
Write the improper fraction as a mixed or whole number.
A. 7
B. 6
C. 7
D. 8
Mathematics
Find the perimeter of the rectangle or square.Length = 163 mm, width = 85 mm
A. 13,855 mm B. 248 mm C. 27,710 mm D. 496 mm
Mathematics