Verbal Reasoning - Mental Ability Questions

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Unwarranted

The weights of 4 boxes are 90, 40, 80 and 50 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?

Select the missing number from the given responses.

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 7, 42, 210, 840, ?

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

Smart, Aspire, Castle, Abysmal, Accost, ?

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Reapproachement

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Obliterate

Raja, Komal, Rupal, Sneha and Tarun are sitting in a line facing south. Raja and Komal are sitting together. Rupal is sitting at west end and Sneha is sitting at east end. Tarun is neighbour of Komal and Rupal. Who is sitting in the middle?