Verbal Reasoning - Mental Ability Questions

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

P_QR_QQ_PQ_R

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

5, 7.5, 12.5, 22.5, ?

Pointing to a boy in a photograph, Rani said "His mother's only daughter is my mother". How is Rani related to that boy?

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

41, 43, 47, 53, ?

If BORDER is coded as 579649, then ORDER can be coded as

Find the missing number in the given figure?

In the following question, select the odd number pair from the given alternatives.

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