CS 1234 has 7 recitation sections. 3 of the recitation sections are led by a pair of TAs, and 4 recitation sections are led by a trio of TAs. There are also 2 TAs who do not teach recitation. How many ways are there to line up all of the TAs such that each TA with recitation partner(s) is standing next to them?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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CS 1234 has 7 recitation sections. 3 of the recitation sections are led by a pair of TAs,
and 4 recitation sections are led by a trio of TAs. There are also 2 TAs who do not
teach recitation. How many ways are there to line up all of the TAs such that each TA
with recitation partner(s) is standing next to them?
Transcribed Image Text:CS 1234 has 7 recitation sections. 3 of the recitation sections are led by a pair of TAs, and 4 recitation sections are led by a trio of TAs. There are also 2 TAs who do not teach recitation. How many ways are there to line up all of the TAs such that each TA with recitation partner(s) is standing next to them?
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