Verbal Reasoning - Mental Ability Questions

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

MAN, ODR, QGV, SJZ, ?

From the given alternative words, select the word which cannot be formed using the letters of the given word:

ENVIRONMENT

In the following question, select the word which cannot be formed using the letters of the given word.

INFORMATION

Select the related word/letters/numbers from the given alternatives:
ECFG : FDGH :: SQTU : ?

The number of letters that are preceded by a symbol but not followed by a number in the given expression is ___.

SM@A#N2B4O&3C5P+D2

The weights of 4 boxes are 10, 40, 50 and 80 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?

From the given words, select the word which cannot be formed using the letters of the given word. CIRCUMSTANCES

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
642 x 6 ÷ 25 + 4 = ?