How many strings of eight uppercase English letters are there if no letter can be repeated?
1 answer:
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First expand:
Now combine like terms:
A coefficient is a number that is in front of an x. The number in front of the x squared term is 6.
So the answer is 6.
Now combine like terms:
A coefficient is a number that is in front of an x. The number in front of the x squared term is 6.
So the answer is 6.
