· Six people namely P, Q, R, S, T and U have their meeting in three different months i.e., January, February, and March. Each month they have their meeting on two different dates i.e., the 1st and 11th. No two people have their meeting on the same date of the same month.
| Date and month | Person |
| 1st January | |
| 11th January | |
| 1st February | |
| 11th February | |
| 1st March | |
| 11th March | |
· T has meeting on 11th of any month.
· Two people have the meeting between T and U.
· So, there are three cases possible i.e., Case 1, Case 2 and Case 3.
| Date and month | Person (Case 1) | Person (Case 2) | Person (Case 3) |
| 1st January | | U | |
| 11th January | T | | |
| 1st February | | | U |
| 11th February | | T | |
| 1st March | U | | |
| 11th March | | | T |
· Q has the meeting immediately before U.
· So, Case 2 will be invalid.
| Date and month | Person (Case 1) | Person (Case 2) (Invalid) | Person (Case 3) |
| 1st January | | U | |
| 11th January | T | | Q |
| 1st February | | | U |
| 11th February | Q | T | |
| 1st March | U | | |
| 11th March | | | T |
· R has meeting immediately before P but not in the same month.
· So, Case 1 will be invalid.
· Remaining, S has meeting on 1st January.
| Date and month | Person (Case 3) |
| 1st January | S |
| 11th January | Q |
| 1st February | U |
| 11th February | R |
| 1st March | P |
| 11th March | T |
S has the meeting on 1st January.
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