Para-jumble (sentence arrangement): Arrange P–Q–R–S to complete the paragraph about a committee meeting and the chairman's role. S1 = "In the middle of one side of the square sits the Chairman of the committee, the most important person in the room." P = "For a committee is not just a mere collection of individuals." Q = "On him rests much of the responsibility for the success or failure of the committee." R = "While this is happening we have an opportunity to get the 'feel' of this committee." S = "As the meeting opens, he runs briskly through a number of formalities." S6 = "From the moment its members meet, it begins to have a sort of nebulous life of its own." Between S1 and S6, place P–Q–R–S in a grammatically correct and logically flowing order. Choose the correct sequence of P–Q–R–S that completes the paragraph.

Given data

• Theme: Committee meeting; S1 introduces the chairman as the key person.
• Fragments: P, Q, R, S as above; S6 concludes with the committee taking on a life of its own.

Concept/Approach
Look for a narrative flow: (1) introduce the chairman's responsibility, (2) begin the meeting, (3) observe impressions, (4) generalize what a committee is, then (5) conclude with S6.

Step-by-step reasoning
After S1, the sentence that directly elaborates the chairman's importance is Q: responsibility for success or failure rests on him. Next, S logically starts the proceedings: as the meeting opens, he runs through formalities. While formalities happen, R fits: we get the "feel" of the committee. P then generalizes: a committee is more than a mere collection of individuals. This sets up the abstract idea for S6.

Verification
Placing P just before S6 allows S6's idea (the committee acquires a life of its own) to follow naturally from the generalization in P.

Common pitfalls
Starting with S or R before Q weakens the direct link from S1's focus on the chairman to his responsibility.

Final Answer
QSRP