While Jill was sitting at the Chez Antoine caf\u00e9 concentrating on a travel magazine, Jack walked in and sat down, placing his backpack in a chair.<\/p>\n
\u201cHi Jill, what\u2019s up?\u201d said Jack full of cheer, ordering a coffee from a waitress by sign language.<\/p>\n
\u201cI\u2019m looking at this curious square with numbers in it,\u201d said Jill scratching her head, \u201cthere is a prize to be won if you can figure out what the missing numbers along the diagonal are.\u201d<\/p>\n
\u201cWhat\u2019s the prize,\u201d inquired Jack with interest.<\/p>\n
\u201cA two-week fully paid vacation for two on the Costa del Sol of Spain,\u201d said Jill.<\/p>\n
\u201cReally!! I was just thinking of going there. Let me have a look at the square,\u201d said Jack eagerly, extending his arm.<\/p>\n
Jill handed over the magazine with a page open that displayed the square:<\/p>\n
| <\/td>\n | 190<\/td>\n | 193<\/td>\n | 164<\/td>\n | 172<\/td>\n | 191<\/td>\n<\/tr>\n |
| 195<\/td>\n | <\/td>\n | 163<\/td>\n | 194<\/td>\n | 186<\/td>\n | 165<\/td>\n<\/tr>\n |
| 184<\/td>\n | 179<\/td>\n | <\/td>\n | 181<\/td>\n | 169<\/td>\n | 183<\/td>\n<\/tr>\n |
| 173<\/td>\n | 178<\/td>\n | 176<\/td>\n | <\/td>\n | 188<\/td>\n | 174<\/td>\n<\/tr>\n |
| 192<\/td>\n | 171<\/td>\n | 177<\/td>\n | 180<\/td>\n | <\/td>\n | 162<\/td>\n<\/tr>\n |
| 166<\/td>\n | 185<\/td>\n | 187<\/td>\n | 170<\/td>\n | 167<\/td>\n | <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u201cThat\u2019s a magic square,\u201d said Jack, \u201cI can work it out, no problem.\u201d<\/p>\n \u201cGreat, then we can send in the correct answer to the magazine right away. Maybe our answer will arrive before anyone else\u2019s,\u201d said Jill as she handed Jack a notepad and a pen.<\/p>\n \u201cConsider it done,\u201d said Jack with a broad smile, \u201cmy Jupiter is conjunct Venus today.\u201d<\/p>\n Soon, Jill paid for the coffee, and they left the Chez Antoine in a hurry.<\/p>\n Can you work out the missing diagonal in the magic square?<\/em><\/p>\n |