In certain code, `123' means `hot filtered coffee'; `365' means `very hot day' and `589' means `day and night'. Which digit in that code means `very'?
6
In the first and second statements, the common code digit is `3' and the common word is `hot'. `3' means `hot'. In the second and third statements, the common code digit is `5' and the common word is `day'. So, `5' means `day'. Therefore, in the second statement, `6' means `very'.