[Q.1] In a certain code language, 'COMPUTER' is written as 'RFUVQNPC'. How is 'MEDICINE' written in that code language?
Reverse the word and replace each letter with its next alphabetical letter: MEDICINE reversed is ENICIDEM -> FOJDJEFM / EOJDJEFM pattern.
[Q.2] Pointing to a photograph, a man said, 'I have no brother or sister but that man's father is my father's son.' Whose photograph was it?
'My father's son' means the man himself (since he has no brother). Thus 'that man's father is myself', so it is his son's photograph.
[Q.3] Statements: All dogs are cats. All cats are animals. Conclusion I: All dogs are animals. Conclusion II: Some animals are dogs.
Since All dogs -> Cats -> Animals, All dogs are animals. Also, since All dogs are animals, Some animals are definitely dogs. Both conclusions follow.
[Q.4] Select the related number from the given alternatives: 12 : 144 :: 15 : ?
$12^2$ = 144. Similarly, $15^2$ = 225.
[Q.5] Find the odd one out from the given options.
Circle has no straight edges/vertices, whereas Square, Triangle, and Rectangle are straight-edged polygons.