Verbal Reasoning - Mental Ability Questions

If 40@8 = -5, 30@3 = -10 and 20@5 = -4, then find the value of 60@3 = ?

In the following question, select the missing number from the given series.
1, 3, 6, 11, 18, ?

Which of the following correctly represents the relationship between the following classes? A) Bell B) Water C) Brass

If D = 4 DESK = 39 ,then the value of DRAW is

Identify the diagram that best represents the relationship among the given classes.
Country, State, City

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

5 V 9 M 63 L 9 S 7 = ?

Weight of C is twice the weight of M. Weight of M is 1/9 of the weight of R. Weight of R is 5/2 of the weight of K. Weight of K is 1/3 of the weight of G. Who is the second lightest?

The weights of 4 boxes are 20, 40, 60 and 90 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?