There are 36^7 different passwords available, incluiding ones that have repeated characters, are sequential characters, or are all the same letter or digit. Of these 26^7 are invalid. the probability of obtaining a valid password is
... 1 - 26^7/36^7 ≈ 0.8975
(A) is your answer
In this case, only rotational symmetry can work, with a turn of 180°
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Answer:
she has hdu 7match the inequalities with the graphs
5(x+6) is the answer.
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