Verbal Reasoning - Mental Ability Questions

The weights of 4 boxes are 30, 40, 50 and 100 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
6, 18, 54, ? , 486, 1458

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

0, 3, 8, ? , 24, 35

In the following question, select the related letter pair from the given alternatives.PIR : OHQ : : ? : ?

If 4Δ2 = 60, 7Δ9 = 160 and 8Δ3 = 110, then find the value of 3Δ2 = ?

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

?, ONM, GFE, XWV

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
a _ bc _ a _ bcdabc _ da _ cd _

Which one of the following figures best represents the relationship among Kitchen, House and Garden?