Ravi is not wearing white and Ajay is not wearing blue.
Ravi and Sohan wear different colours.
Sachin alone wear red. What is Sohan's colour, if all four of them are wearing different colours ? 

D. CAN'T SAY

There are six persons A, B, C, D, E and F in a school. Each of the teachers teaches two subjects, one compulsory subject and the other optional subject. D's optional subject was History while three others have it as compulsory subject. E and F have Physics as one of their subjects. F's compulsory subject is Mathematics which is an optional subject of both C and E. History and English are A's subjects but in terms of compulsory and optional subjects, they are just reverse of those of D's. Chemistry is an optional subject of only one of them. The only female teacher in the school has English as her compulsory subject. What is C's compulsory subject ?

A. HISTORY

There are six persons A, B, C, D, E and F in a school. Each of the teachers teaches two subjects, one compulsory subject and the other optional subject. D's optional subject was History while three others have it as compulsory subject. E and F have Physics as one of their subjects. F's compulsory subject is Mathematics which is an optional subject of both C and E. History and English are A's subjects but in terms of compulsory and optional subjects, they are just reverse of those of D's. Chemistry is an optional subject of only one of them. The only female teacher in the school has English as her compulsory subject. Which of the following has same compulsory and optional subjects as those of F's ?

E. NONE OF THESE

In a school, there were five teachers.
A and B were teaching Hindi and English.
C and D were teaching English and Geography.
D and A were teaching Mathematics and Hindi
E and B were teaching History and French. Who among the teachers was teaching less than two subjects ?

E. THERE IS NO SUCH TEACHERS

There are six cities A, B, C ,D, E and F.
A is not a hill station.
B and E are not historical places.
D is not an industrial city.
A and D are not historical cities.
A and B are not alike. Which two cities are hill stations ?

C. B AND D