Question
How many 7-digit different numbers can be formed from the digits 5, 5, 6, 6, 9, 9, 9 using all of them, and how many of them are greater than 9,950,000?
How many 7-digit different numbers can be formed from the digits 5, 5, 6, 6, 9, 9, 9 using all of them, and how many of them are greater than 9,950,000?
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