Verbal Reasoning - Mental Ability Questions

Arrange the given words in the sequence in which they occur in the dictionary.
1. Effacers
2. Effacing
3. Effaceable
4. Effacements
5. Effacement

Select the missing letter from the given responses?

Select the related word/letters/number from the given alternatives.
30 : 16 :: 24 : ?

Which one set letters when sequentially placed at the gaps in the given letter series shall complete it?

M__OMMN__M__NOMMN__M

Five girls are sitting facing towards the north. Rekha is between Shalini and Neetu. Pooja is to the immediate right of Neetu and Shalini is to the immediate right of Neha. Who is sitting in the middle?

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

50 + 3 ÷ 125 x 5 - 25 = ?

In a certain code language "CANADA" is written as "BZMBEB". How is "SYDNEY" written in that code language?

In a certain code language, " EXCITED" is written as "DETICXE". How is "KINLEY" written in that code language?