Verbal Reasoning - Mental Ability Questions

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
400, -200, 100, ? , 25, -12.5

Some equations are solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

5 x 4 x 3 = 70 ,
6 x 5 x 4 = 140
7 x 6 x 5 = ?

In the following question, select the related letters from the given alternatives.TRACK : MECTV : : POND : ?

Find the missing number from the given alternatives.

Which of the following cube in the answer figure cannot be made based on the unfolded cube in the question figure?

A man walks 7 km towards south and turns to the left. After walking 5 km, he turns to the right and walks 7 km. In which direction is he now from the starting point?

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

IB,QD,XH,DP,?

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

75 - 5 + 25 ÷ 125 = ?