Lunch
Seven classmates go every day for lunch. If they always come to the front in a different order, will it be enough school year to take off all the possibilities?
Correct answer:
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See also our variations calculator.
Do you want to convert time units like minutes to seconds?
Would you like to compute the count of combinations?
You need to know the following knowledge to solve this word math problem:
combinatoricsarithmeticbasic operations and conceptsnumbersUnits of physical quantitiesGrade of the word problem
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