Math
posted by Anonymous .
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?

This has been answered already. Look for a recent post of the same question, with explanations by drwls and bobpursley.
Respond to this Question
Similar Questions

math
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? 
math
an airline passanger fell asleep halfway to her destination. When she woke up, the distance remaining was half the distance traveled while she was asleep. What portion of the trip was she asleep? 
sdu
. A man finds that two things cause him to wake up at nightnoise or indigestion. If it is due to noise, the time to fall asleep again has exponential distribution with rate 5 per hour, and if it is due to indigestion the time to fall … 
math
A store sells small notebooks for $8 and large notebooks for $10. If you buy 6 notebooks and spend $56, how many of each size notebook did you buy? 
math
1. What is the experimental probability that the next customer buys any red notebooks? 
Math
The school store opened on the first day of scroll with 56 notebook and 24 pencils. Within two days it sold all of these items. On the first day, twice as many notebooks were souls as pencils. On the second day for every 5 notebooks … 
Math
The school store opened on the first day of scroll with 56 notebook and 24 pencils. Within two days it sold all of these items. On the first day, twice as many notebooks were souls as pencils. On the second day for every 5 notebooks … 
algebra
You are buying two kinds of notebooks for school. A threering notebook costs $6, and a spiral notebook costs $3. You must have at least five notebooks. The cost of the notebooks can be no more than $24. Which system of inequalities, … 
math
11 notebooks were added to w notebooks. 7 friends then shared the notebooks equally. Express the number of notebooks each person received in terms of w. 
math
Joe went school supply shopping. He spent $22.50 on notebooks and pencils. Notebooks cost $2.00 and pencils cost $0.50. He brought a total of notebooks and pencils. How many pencils did he buy?