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, '256' means 'red colour chalk' ; '589' means 'green colour flower' and '245' means 'white colour chalk'. Which digit in that code means 'white' ?
In the second and third statements, the common code digit is '5' and the common word is 'colour'.
So, '5' means 'colour'.
In the first and third statement, '5' means 'colour'. The other common code digit is '2' and the common word is 'chalk'.
So, '2' means 'chalk'.
Thus, in the third statement, '4' means 'white'.