Solve the problem.A stack of 9 different cards are shuffled and spread out face down. If 4 cards are turned face up, how many different 4-card combinations are possible?
A. 126
B. 1512
C. 15,120
D. 3024
Answer: A
Mathematics
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x2 - 
x
A. (-?, -1) B. (1, ?) C. (-1, 1) D. (-?, ?)
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Classify the statement as true or false.12 ? {x 
x is an even number}
A. True B. False
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Find the requested probability.A box contains the eleven letters PROBABILITY. Four letters are drawn one by one with replacement and recorded in order. What is the probability that the outcome is TAIL?
A. 
B. 
C. 
D. 
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Solve the problem.For a particular circuit, the current (in amperes) after time t (in seconds) at a certain point P is given by 
Find the charge (in coulombs) that passes point P during the first second.
A. 0.005 C B. 263 C C. 1.3 C D. 0.0038 C
Mathematics