Verbal Reasoning - Mental Ability Questions

In a certain code language, '-' represents '+', '+' represents 'x', 'x' represents '÷' and '÷' represents '-'. Find out the answer to the following question.

6 ÷ 10 - 30 + 4 x 12 = ?

In a certain code language, '÷' represents '+', '-' represents 'x', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

20 + 5 x 4 ÷ 7 - 2 = ?

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

Resources

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
DE, GI, KN, ?

Mother of K's father is the sister of G. S is the daughter of G. How is S related to K's father?

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

ACE, GJI, MQM, ?

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

ELABORATE

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

Mercury, Venus, Earth, ?