In Mixed letter coding type of questions, three or four complete messages are given in the coded language and the code for a particular word is asked. To analyse such codes, any two messages bearing a common word are picked up. The common code word will mean that word. Proceeding smilarly by picking up all possible combinations of two, the entire message can be analysed.
In a certain code language, 'Tom Kun Sud' means 'Dogs are barking';
'Kun Jo Mop' means 'Dogs and horses' and
'Mut Tom Ko' means 'Donkey are mad'.
Which word in that language means 'barking' ?
In the first and second statements, the common code word is 'Kun' and the common word is 'Dogs'.
So, 'Kun' means 'Dogs'.
In the first and third statements, the common code word is 'Tom' and the common word is 'are'.
So, 'Tom' means 'are'.
Thus, in the statement, 'Sud' means 'barking'.