Verbal Reasoning - Mental Ability Questions

The weights of 4 boxes are 20, 40, 50 and 30 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?

Find the odd word/letters/number from the given alternatives.

If 'due to you' is coded as 'ba da ca', 'he is due' as 'xe ba le' and 'is sue to' as 'ba xe ca', then 'you' = ?

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

FU, GT, HS, IR, ?

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

BMX, DNW, FOV, ?

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Nightwalker

Two labourers L and M start at the same point. L walks 10 m South, then turns left and walks 25 m. In the meanwhile M walks 20 m West, then turns to his right and walks 15 m , then turns East and walks 45 m. Where is M with respect to L?

Samarth heading towards north turns right after walking 10m, he turns right again walks for 4 meters and then he turns left and walks 6 km. In which direction he is walking?