Questions LLC
Login
or
Sign Up
Ask a New Question
Mathematics
Combinatorics
Permutations
Four students fall asleep during class and, while asleep, the professor rearranges their notebooks so that when they wake up, nobody has his or her own notebook. In how many ways could the professor have rearranged the notebooks?
1 answer
This has been answered already. Look for a recent post of the same question, with explanations by drwls and bobpursley.
You can
ask a new question
or
answer this question
.
Related Questions
Use the paragraph to answer the question.
Joachim always had a hard time falling asleep, and tonight was no different. He decided
from Beowulf, “Grendel,” “The Coming of Grendel,” and “The Battle with Grendel”Grendel easily killed thirty warriors
The suffix -ant means "tending to" and the word root -vig- means "watchful." Which word is the best synonym for vigilant?(1
A sleep specialist wants to know if meditating before you go to sleep can help you fall asleep. She conducted a study where
Use the paragraph to answer the question.
Joachim always had a hard time falling asleep, and tonight was no different. He decided
The suffix -ant means "tending to," and the word root -vig means "watchful." Which word is the best synonym for vigilant?(2
The suffix -ant means "tending to" and the word root -vig- means "watchful." Which word is the best synonym for vigilant?(1
QUESTION 2
2 / 4 Read each passage. Which one has a problem-solution text structure? Sleep is important to our health. But what
The suffix -ant means "tending to" and the word root -vig- means "watchful." Which word is the best synonym for vigilant?(1
The suffix -ant means "tending to" and the word root -vig- means "watchful." Which word is the best synonym for vigilant?(1