Verbal Reasoning - Mental Ability Questions

Given intercharges : 

Signs + and x and numbers 4 and 5.

In the following question, select the missing number from the given series.

63, 56, 50, 43, 37, 30, ?

Rahul's mother is the only daughter of Monika's father. How is Monika's husband related to Rahul ?

If train is called bus, bus is called tractor, tractor is called car, car is called scooter, scooter is called bicycle, bicycle is called moped, which is used to plough a field ?

Select the correct set of symbols which will fit in the given equation?

5 0 3 5 = 20

Select the related word/letters/number from the given alternatives.

EF : GH : : IJ : ?

In the following question, select the missing number from the given series.

13, 19, 32, 51, 83, ?

If 18!10 = 4, 10!4 = 3 and 4!8 = -2, then find the value of 16!18 = ?