A + B means A is the son of B;
A - B means A is the wife of B;
A x B means A is the brother of B;
A ÷ B means A is the mother of B; and
A = B means A is the sister of B.
What does P + R - Q mean ?

A. Q IS THE FATHER OF P.

In every hour, a cyclist covered 1 km more distance than he was to cover with his original speed on $1×1/4$ hour.
So he covered 96 km distance early by 2 hours.
The original speed of cyclist (km/hr) is 

A. 12

Look at this series: 1.5, 2.3, 3.1, 3.9, . . .
What number should come next?

C. 4.7

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - _ _ babbba _ a _ _

D. BABBB

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 groups has History as the compulsory subject ?

D. A, B, C