Eight persons- A, B, C, D, E, F, G and H visited different countries in different months viz., January, April, May, July, August, September, October and December but not necessarily in the same order.
Three persons visited between B and G.
B visited in the month having an even number days.
Even number of days month = April, September
| | Case 1 | Case 2 |
| Month | Person | Person |
| January | | |
| April | B | G |
| May | | |
| July | | |
| August | | |
| September | G | B |
| October | | |
| December | | |
Two persons visited between H and F.
H visited immediately after G.
Thus, Case 2 gets cancelled.
| | Case 1 |
| Month | Person |
| January | |
| April | B |
| May | |
| July | F |
| August | |
| September | G |
| October | H |
| December | |
As many persons visited before F as after E.
| | Case 1 |
| Month | Person |
| January | |
| April | B |
| May | |
| July | F |
| August | E |
| September | G |
| October | H |
| December | |
A visited after C but not in December month.
| | Case 1 |
| Month | Person |
| January | C |
| April | B |
| May | A |
| July | F |
| August | E |
| September | G |
| October | H |
| December | |
Now, only D is remaining.
| Month | Person |
| January | C |
| April | B |
| May | A |
| July | F |
| August | E |
| September | G |
| October | H |
| December | D |
This is the final arrangement.
Three many persons visited before F.
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