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Try this problem from I.S.I. B.Stat Entrance Objective Problem based on Arrangement in a Ring.
Arrangement in a Ring ( B.Stat Objective Question )
The number of ways 5 persons PQRST seats in a ring so that P sits between Q and R is
- 104
- 4
- 1154
- none of these
Key Concepts
Integers
Number of ways
Arrangements
Check the Answer
But try the problem first…
Answer: 4.
Source
Suggested Reading
B.Stat Objective Problem 103
Challenges and Thrills of Pre-College Mathematics by University Press
Try with Hints
First hint
here SQPRT, TQPRS, SRPQT, TRPQS
Second Hint
are 4 arrangements in 1 way (orderwise)
Final Step
number of ways =\(4 \times 1\)=4 ways.
Other useful links
Related Program
I.S.I. & C.M.I. Entrance Program
Taught by students and alumni of I.S.I. & C.M.I.
