In Mixed number coding type of questions, a few groups of numbers each coding a certain short message, are given. Through a comparison of the given coded message, taking two at a time, the candidate is required to find the number code for each word and then formulate the code for the message given.
In a certain code, '467' means 'leaves are green' ; '485' means 'green is good' and '639' means 'they are playing'. Which digit stands for 'leaves' in that code ?
In the first and second statements, the coommon code digit is '4' and the common word is 'green'.
So, '4' means 'green'.
In the first and third statements, the common digit is '6' and the common word is 'are'.
So, '6' means 'are'.
Thus, in the first statements, '7' means 'leaves'.