Verbal Reasoning - Mental Ability Questions

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

5, 30, 155, 780, ?

In the following question, by using which mathematical operator will the expression become correct?
18 ? 6 ? 9 ? 27

'A' is the sister of 'B'. 'B' is married to 'D'. 'B' and 'D' have a daughter 'G'. How is 'G' related to 'A'?

Identify the diagram that best represents the relationship among the given classes.
Country, State, City

Fire : Burn :: Water : ?

In a certain code, if LEMON is coded as PWOMA then SHIRT is coded as

Select the missing numbers from the given alternatives 12 8 4 8 4 12 4 12 8 100 44 ?

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

72, 65.7, ? , 53.1, 46.8