Seven persons- P, Q, R, S, T, U and V have exam on different days of the week starting from Monday to Sunday but not necessarily in the same order.
The number of persons having exam before R is same as the number of persons having exam after V.
R has exam before V and after S.
| | Case 1 | Case 2 |
| Day | Person | Person |
| Monday | | |
| Tuesday | R | |
| Wednesday | | R |
| Thursday | | |
| Friday | | V |
| Saturday | V | |
| Sunday | | |
Only one person has exam between S and Q.
R has exam before V and after S.
| | Case 1 | Case 2 |
| Day | Person | Person |
| Monday | S | |
| Tuesday | R | S |
| Wednesday | Q | R |
| Thursday | | Q |
| Friday | | V |
| Saturday | V | |
| Sunday | | |
Two persons have exam between Q and P.
T has exam immediately before P.
Thus, Case 1 gets cancelled.
| | Case 2 |
| Day | Person |
| Monday | |
| Tuesday | S |
| Wednesday | R |
| Thursday | Q |
| Friday | V |
| Saturday | T |
| Sunday | P |
Now, only U is remaining.
| Day | Person |
| Monday | U |
| Tuesday | S |
| Wednesday | R |
| Thursday | Q |
| Friday | V |
| Saturday | T |
| Sunday | P |
This is the final arrangement.
Except SV, in all other pairs only one person has exam between them.
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