In a certain code, '3 8 5' means 'sky is blue', '5 1 6' means 'blue sea water' and '6 8 2' means 'water is cool'. Which number is the code for 'sea'?

Explanation

1. 01

   'blue' is in the first two sentences, so it is 5. 'water' is in the last two, so it is 6.

2. 02

   The second sentence '5 1 6' then leaves 1 for 'sea'.

3. 03

   So 'sea' is 1.