Direction: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
ab_bba _ _bba _abb _ _a 

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.
 PIG : MNZ :: ROL : ? 

What will come in the place of question mark?
AKL, BPM, YQN, ZJO, ?

In the following figure, the rectangle represents the artists, the triangle represents the writers, the circle represents the social workers and the square represents the father. Which group of letters represents social workers who are not fathers?

In a row there are 6 boys between A and B and A is being the first boy in the row. There are 3 boys between B and C. If there are 12 boys after C, then how many maximum boys are there in the row?

6, 14, 36, 98, ?

27,32,30,35, 33, ?

Direction : Study the following information carefully and answer the questions given below:
Seven persons were born in different years i.e. 1953, 1963, 1968, 1976, 1990, 1993, 1998. 2019 is the base year for measuring the age of all persons. Not more than two persons were born before P. One person was born between V and S and none of them have even numbered age. There are as many persons were born before U as after Q. Difference between the age of T and S is not less than 20 years. T was born before Q and after R. Either P or U have odd numbered age.

How many persons are younger than U?