The given information can be analysed as follows :
(A) Mode of Transport : R goes by Car, Q by Aeroplane, S by Boat and T by Train.
Now, only P remains. So, P travel by Bus.
(B) Place of Travel : R goes to Bangalore, Q to Calcutta. Now, bus transport is not available for Delhi or Chennai. So, P who travels by Bus goes to Hyderabad. S travels by boat and hence, by (ii), did not go to delhi. So, S goes to Chennai. Now, only T remains. So, T goes to Delhi.
| |
Place |
Mode |
| P |
Hyderabad |
Bus |
| Q |
Calcutta |
Aeroplane |
| R |
Bangalore |
Car |
| S |
Chennai |
Boat |
| T |
Delhi |
Train |
Clearly, the incorrect combination is Delhi -- Bus. So, the answer is (a).