Solve the problem.Suppose that an honest coin is tossed ten times. What is the probability that at least twice it comes up heads?
A. 
B. 
C. 
D. 
E. none of these
Answer: A
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Provide an appropriate response.If you flip a fair coin 10 times would you be surprised if the coin comes up the same way every time? What would be the probability of this?If 2000 people all flip a fair coin 10 times, on average how many people could be expected to get the same thing all 10 times?
What will be an ideal response?
Solve the problem.A cashier has a total of 140 bills, made up of fives and tens. The total value of the money is $910. How many ten-dollar bills does the cashier have?
A. 21 ten-dollar bills B. 98 ten-dollar bills C. 42 ten-dollar bills D. 63 ten-dollar bills
Perform the indicated operation. Assume that all variables are nonnegative.(-
)2
A. -6x2 B. 6x C. -6x D. 6x2
Write the expression in the standard form a + bi.(-
+ i)6
A. 64 - 64
i
B. 64i
C. -64
D. -64
+ 64i