Verbal Reasoning - Mental Ability Questions

Find the next in this series:
YC3, XF6, WI9, ........

In the following question, select the related word from the given alternatives.
Goiter : Iodine : : Anemia : ?

In a certain code language, " EXCITED" is written as "DETICXE". How is "KINLEY" written in that code language?

Farhan travels 4 km in the north-east direction and then turns towards the south-east to travel another 3 km. How far is he now from his original position?

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

P_P_RPQ_S_Q_ST

In a certain code language, "BISLERI" is written as "IREBISL". How is "PANTHER" written in that code language?

‘R + S’ means ‘R is mother of S’, ‘R – S’ means ‘R is wife of S’, ‘R × S’ means ‘R is son of S’ and ‘R ÷ S’ means ‘R is father of S’. Which of the followingrepresents K as the grandson of T?

In each of the following questions, four words have been given out of which three are alike in some manner, while the fourth one is different. Choose the word which is different from the rest.