There is a company of 7 people sitting at a round table. Given that the seats arenot numbered. (Choose the option "None among the others", if none of theother options is your answer.)1) How many sitting orders are possible?2) How many sitting orders are possible under the condition that two persons ofthe company want to sit next to each other?None among the others2150407720720None among the others1440120240

Answered: 1) How many sitting orders are…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Quen: In a pharmaceutical study, two drugs (A and B) and a placebo are to be compared for effects. Fifty people are to be used in the study, of whom 20 are to receive drug A, 20 receive drug B, and the remainder receive the placebo. Assuming the people are numbered 1 to 50, how many different ways could the assignment of the drugs and placebo be made?

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1) How many sitting orders are possible? 2) How many sitting orders are possible under the condition that two persons o the company want to sit next to each other? None among the others 21 5040 7 720 720 None among the others 1440 120 240