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?
a _ bc _ a _ bcdabc _ da _ cd _

Select the related number from the given alternatives.
3/7 : 7/3 :: 9/2 : ?

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?

If 8%5 = 30, 9%2 = 70 and 1%4 = -30, then find the value of 2%5 = ?

Select the related word/letters/number from the given alternatives.
Ctrl+X : Cut : : Ctrl+C : ?

While posing for a family photo, the father is standing to the right of the son and left of the grandmother. The mother is sitting to the left of her daughter and right of the grandmother. Who is seated in the middle?

If 'U' is the husband of 'V', 'V' and 'W' are daughters of 'X', 'Y' is the husband of 'X', then 'Y' is the ____ of 'U'.

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

2, 3, 7, 16, ?