Letters coded by position in alphabet: G=7, R=18, A=1, P=16, E=5

From 'Some clouds are white' and 'All white things are visible', we can conclude 'Some clouds are visible'

Differences: +3, +5, +9, +17, +33. Each difference approximately doubles. Next: 37+33=70

Teacher teaches students; Doctor treats patients. Relationship of professional to their client

Fibonacci sequence: Each number is sum of previous two. 8+13=21

After tracking movements: North 5km, East 3km, North 4km, East 2km. Final direction is East.

Each letter shifts backward by 2 positions: M→K, O→M, T→R, H→F, E→C, R→P. Applying same rule to FATHER: F→D, A→Y, T→R, H→F, E→C, R→P gives DYRFCP. Check: Pattern is -2 shift, so FATHER→DSVGEV.

Neha's mother's only daughter is Neha herself. The man's mother is Neha, so the man is Neha's son. Wait - recalculate: His mother = Neha's mother's only daughter = Neha. So he is Neha's son. But checking options, if he's her son, that's not listed properly. Re-read: 'His mother is my mother's only daughter' = Neha is the man's mother, making him her son. However, if interpreting as the man being related, he would be her brother if his mother is Neha's mother's daughter.

All philosophers are thoughtful, but only SOME thoughtful people are writers. We cannot conclude that some philosophers are writers without additional information.

COMPUTER→RFMYOLSV uses reverse alphabet mapping (A↔Z, B↔Y, etc.). KEYBOARD using same rule gives DSVVBSYQ.