Direction (66-70): What should come in place of the question mark(?) in the following number series?

125, 80 , 45, 20, ?

Directions :Study the following information carefully and answer the given questions.
L. M. N, O, P, Q , R and S are sitting around a circular table facing the centre but not necessarily in the same order . P sits third to left of M. P is an immediate neighbour of both o and S. Only one person sits between O and Q. R is an immediate neighbour of O. Only one person sits between R and N. 

Four of the following five are alike in a certain way and thus form a group. Which is the one that does not belong to that group?

A family has 6 members P, Q, R , S , T and U. Q is the son of R, but R is not the mother of Q. P and R are a married couple. T is the brother of R. S is the daughter of P. U is the sister of Q.

How many brothers does U have?

Direction :   Study the following information carefully and answer the given questions.
 Six people M, N, O, P, Q and R, stay on different floors of a six-story building (the ground floor is numbered as floor 1 and the top floor is numbered as floor 6). Each of them is in a different profession, via Singer, Dancer, Physician, Teacher, Choreographer and Manager
 P is a Physician but stays neither on floor 2 nor on floor 5. N is neither a Teacher nor a Choreographer but stays on floor 6. The Choreographer doesn’t stay below the floors of the Teacher but stays below the floor of the Dancer. The Manager stays either on floor 1 or on floor 4. Q doesn’t stay on an odd-numbered floor. M, who stays on floor 4, is either a Choreographer or a Teacher. Either O or R is a Dancer. 

Dancer stays on which floor? 

Six persons, Vinay, Madhav, Nilesh, Sagar, Arvind, Rajesh, are standing in two rows facing towards each other such that three persons are in a row.
1) Nilesh is between Arvind and Sagar.
2) Nilesh is not facing Vinay.
3) Madhav is facing Arvind.
What is Rajesh’s position?

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

PV : MQ :: FB : ?

Direction : Study the following information carefully and answer the given questions.
Eight persons viz : Daniel, Ibrahim, Fana, George, Hiccup, Ishan, Jack and Kelvin live in on different floors of eight floor building but not necessarily in the same order. The lowermost floor of the building is numbered 1, first floor of the building is numbered 2 and the topmost floor of the building is numbered 8. They are specialized in the different subjects in the state university viz Biotechnology, Physics, Biology, Computer Science, Mathematics, Humanities, History, and Geography but not necessarily in the same order.
The one who lives on fourth floor is specialized in Mathmatics. Daniel lives on odd numbered floor but above 3rd floor. The number of person between Daniel and Humanities specialized per- son is same as number of person between denial and Ishan. The one who is specialized in Physics lives on lower most floor. Kelvin lives on an even numbered floor and he is specialized in History. There are two floors between Ibrahim and Hic- cup and Ibrahim lives above to Hiccup. Ibrahim is specialized in Computer Science. Jack lives just above the one who is specialized in Computer Science. Two floors between the one who is specialized in Computer Science and Mathematics. The one who is specialized in Geography lives on odd numbered floor. Four floors between the one who is specialized in Biotechnology and Jack. The one who is specialized in Computer Science lives on odd numbered floor. The number of floors between the one who is specialized in Geography and the floor on which Fana lives is same as the number of floors between Fana and George. Ishan lives below the floor on which Daniel lives. 

Four of the following five are alike in a certain way and hence they form a group. Which one of the following does not belong to that group? 

Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
 8 : 32 :: 12 : 72 :: 18 : ?