Verbal Reasoning - Mental Ability Questions

We know that, a folder holds documents in the same way an envelope holds letters.

Hence, Folder : Document :: Envelope : Letter.

First comments on the second. Appraiser comments on buildings and a Critic comments on books.

Hence, Appraiser : Building :: Critic : Book.

First is the type of houses most commonly found in the second.

Following table depicts the code of used letters in the two given words: 

Letters     S     T     A     R     O     E

Code          5     $     *     2     3     @

Therefore, OATS => 3*$5

Ration synonyms are allowance, consignment, quota,...

Given Number :      2 5 6 7 3 9 4 8

Ascending order :  2 3 4 5 6 7 8 9

Specified letters are 6 and 4 respectively.

Hence, required sum = (4 + 6 = 10)

According to given data the sitting order is P X Q Y Z R

So the members in the extreme position are P R