പുസ്തകത്തിന്‌ ഗ്രന്ഥകാരനെന്ന പോലെയാണ് പ്രതിമയ്ക്ക്:

വിജ്ഞാനത്തിന് വായന എന്നപോലെയാണ് ആരോഗ്യത്തിന്:

A, B, C, D, E and F are 6 persons travelling together in a boat. 3 of them B, C and E are women and the rest are men. However A, B, C and E are vegetarians while D and F are non vegetarians. B, E and F know swimming, while the rest do not.

The only female who does not know swimming is :

A, B, C, D, E and F are 6 persons travelling together in a boat. 3 of them B, C and E are women and the rest are men. However A, B, C and E are vegetarians while D and F are non vegetarians. B, E and F know swimming, while the rest do not.

The non-vegetarian male who knows swimming is :

A, B, C, D, E and F are 6 persons travelling together in a boat. 3 of them B, C and E are women and the rest are men. However A, B, C and E are vegetarians while D and F are non vegetarians. B, E and F know swimming, while the rest do not.

The non-vegetarian male who does not knows swimming is :

4, 12, 36, 108, .............