2,5,9, (…), 20,27?

Select the related word/letters/number from the given alternatives.
Norway: Oslo:: Poland: ?

Seven boys J, M, N, K, P, L and O sit in a row facing the South (but not necessarily in the same order). K sits fifth to the left of J. K does not sit at any of ends. L sits exactly in the middle of the row. L sits third to the right of M. Only two boys sit between O and P. O is not the immediate neighbour of L. Three of the following are similar by a certain logic and form a group. Which of the following does NOT belong to that group?

In each of the following questions, certain pairs of words are given, out of which the words in all pairs except one, bear a certain common relationship. Choose the pair in which the words are differently related?

Four number have been given out of which three are alike in some manner, while one is different. Choose the odd one.

Study the following information carefully to answer the given questions.There are seven friends namely A, B, C, D, E, F and G each of them aspires to become something. Each of them likes different colours viz. Blue, Yellow, Green, Violet, Red, Black and Pink but not necessarily in the same order.Each of them wants become Lawyer, Doctor, Engineer, Actor, Pilot, Soldier and Cricketer but not necessarily in the same order.
E likes violet colour and wants to become a Doctor.
C likes yellow colour and wants to become a Cricketer.
G doesn’t like black colour and doesn’t want to become an Engineer.
The person who likes red colour, wants to become an Actor while the person who wants to be a Pilot, likes blue colour.
A likes pink colour but F doesn’t like green or black colour and he doesn’t want to become an Actor.
D wants to become a Lawyer. B doesn’t want to become an Engineer or a soldier.

F wants to become a/an ________

Which of the following numbers will replace the question mark (?) in the given series?
 19, 38, 35, ?, 135, 810

Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:
 All pencils are erasers.
 All sharpeners are erasers.
 All compasses are sharpeners.

Conclusions:
 I. All compasses are erasers.
 II. Some compasses are pencils.
 III. Some erasers are compass.