· P, Q, R, S, T, U and V are born in seven different months namely January, February, March, April, May, June and July, but not necessarily in the same order of the same year. No two people are born in the same month.
| Month | Person |
| January | |
| February | |
| March | |
| April | |
| May | |
| June | |
| July | |
· S is born in one of the months after May.
· Four people are born between S and Q.
· So, there are two cases possible i.e., Case 1 and Case 2.
| Month | Person (Case 1) | Person (Case 2) |
| January | Q | |
| February | | Q |
| March | | |
| April | | |
| May | | |
| June | S | |
| July | | S |
· T is born immediately after Q.
· V is born immediately after R but immediately before P.
| Month | Person (Case 1) | Person (Case 2) |
| January | Q | |
| February | T | Q |
| March | R | T |
| April | V | R |
| May | P | V |
| June | S | P |
| July | | S |
· U is born in one of the months after P.
· So, Case 2 will be invalid.
| Month | Person (Case 1) | Person (Case 2) (Invalid) |
| January | Q | |
| February | T | Q |
| March | R | T |
| April | V | R |
| May | P | V |
| June | S | P |
| July | U | S |
Finally, we get,
| Month | Person |
| January | Q |
| February | T |
| March | R |
| April | V |
| May | P |
| June | S |
| July | U |
S is the odd one out because except for this the rest are all born in the month which has 31 days whereas S is born in the month which has 30 days.
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