How many friends will get their article published before the publication of the article by D?
- ((a))
1
- ((b))
2
- ((c))
5
- ((d))
6
- ((e))
3
Show Answer
3
Friends: A, S, D, F, G, H, J and K.
Months: January, February, March, April, May, June, July and August.
-
S and G will get their article published in two simultaneous months after May.
-
The article of F is to be published in the second month.
| Months | Friends | |
|---|---|---|
| Case I | Case II | |
| January | ||
| February | F | F |
| March | ||
| April | ||
| May | ||
| June | S/ G | |
| July | S / G | S/ G |
| August | S / G |
- H will get his article published before the publication of the article by F.
| Months | Friends | |
|---|---|---|
| Case I | Case II | |
| January | H | H |
| February | F | F |
| March | ||
| April | ||
| May | ||
| June | S/ G | |
| July | S / G | S/ G |
| August | S / G |
- J will get his article published on a month after March but before June.
| Months | Friends | |
|---|---|---|
| Case I | Case II | |
| January | H | H |
| February | F | F |
| March | ||
| April | J | J |
| May | J | J |
| June | S/ G | |
| July | S / G | S/ G |
| August | S / G |
- The article of A is published at the end.
(Case II will be eliminated.)
- The article of D will be published immediately after the article by K.
| Months | Friends |
|---|---|
| January | H |
| February | F |
| March | K |
| April | D |
| May | J |
| June | S/ G |
| July | S / G |
| August | A |
Hence, three friends will get their article published before the publication of the article by D.









































