If in a certain code language, '324' means 'Light is bright', '629' means 'Girl is beautiful' and '4758' means 'I prefer bright clothes', which digit means 'Light' in that language ?
In the first and second statements, the common word is 'is' and the common code digit is '2'.
So, '2' means 'is'.
In the first and third statements, the common word is 'bright' and the common code digit is '4'.
So, ''4' means 'bright'.
Thus, in the first statement, '3' means 'Light'.
Hence the answer is (a).