In a certain code language,

'A + B' means ‘A is the mother of B’,

'A – B' means ‘A is the brother of B’,

'A × B' means ‘A is the wife of B’ and

'A ÷ B' means ‘A is the father of B’.

Based on the above, how is Q related to T if ‘P + Q – R × S ÷ T’?​

'A + B' means ‘A is the mother of B’,

‘P + Q – R × S ÷ T’ ?

So, Based on the above,  Q is  related to T's  ​Mother’s brother.

Thus, the correct option is: (b)