Verbal Reasoning - Mental Ability Questions

I go 5 km East, then turn right and go 8km. Then I turn left and go 5 km and then I turn left and go 8 km. At what distance am I from the starting point?

In the following question, select the related word from the given alternatives.
Book : Pages : : Continent : ?

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 38 x 2 – 6 + 19 ÷ 35 = ?

If 18α1 = 34, 19α2 = 34 and 18α3 = 30, then find the value of 18α8 = ?

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

Inch, Decameter, Foot, ?

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

In the following question, select the related letters from the given alternatives.
KLMN : IJKL : : TUVW : ?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?
550 x 22 - 24 + 3 = ?