probability, permutations, and combinations

Genisnotme said:
How many ways can you arrange 3 quarters and 7 nickels in a line? 3,628,800
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Please show us what you have tried and exactly where you are stuck.

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Please share your work/thoughts about this problem
 
Genisnotme said:
How many ways can you arrange 3 quarters and 7 nickels in a line? 3,628,800
Click to expand...
The letters in the word \(MISSISSIPPI\) can be arranged in \(\dfrac{11!}{(4!)^2(2!)}\) ways.
How any can you arrange the string \(QQQNNNNNNN~?\)
 
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