A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
FU, LO, RI, ?

Conditions;
(A) There are six members in a family – A, B, C, D, E & F, including two married couples.
(B) Two of them are doctors, one is a teacher, one is a clerk & two are the artists. Both the doctors are of same gender.
(C) A & C are in the same profession.
(D) Teacher is married to a doctor & an artist is married to clerk.
(E) A is an artist & E is male doctor. Both are unmarried.
(F) F is a husband of B.
The married couples from the following are 

Direction: In the following question, select the related letters from the given alternatives. 

AG : IO :: EK : ?

In the following question, select the missing number from the given series.
37, 50, 65, 82, ?, 122

Direction (16-20): From among the given alternatives select the one in which the set of numbers is most like the set of numbers given in the questions.

 
Given set
6, 14, 30 

(i) There is a group of five persons – A, B, C, D and E.

(ii) One of them is a horticulturist, one is a physicist, one is a journalist, one is an industrialist and one is an advocated.

(iii) Three of them – A, C and advocate prefer tea to coffee and two of them – B and the journalist prefer coffee to tea.

(iv) The industrialist and D and A are friends to one another but two of these prefer coffee to tea.

(v) The horticulturist is C`s brother. Who is a horticulturist?

If '+' means '÷' ;  ‘÷’means ' - ' ; ' - ' means '×' ; '×' means '+' , then
8 + 2÷ 3- 4 x 6 =?