Ranjan is the brother of Sachin and Manick is the father of Ranjan. Jagat is…

Concept: To solve a blood-relation puzzle, translate every sentence into a parent-child or sibling link and assemble one family tree, then read the required relation directly off that tree. An uncle is specifically a parent's brother — one generation up, on the sibling line, never the parent or grandparent themselves.

1. Ranjan is the brother of Sachin, so Ranjan and Sachin are siblings sharing the same parents.

2. Manick is the father of Ranjan, so — since Ranjan and Sachin are siblings — Manick is also the father of Sachin.

3. Priya is the daughter of Sachin, so Sachin is a parent of Priya.

4. Jagat is the brother of Priya, so Jagat is also a child of Sachin, making Sachin the parent of Jagat.

5. Sachin is Jagat's parent, and Ranjan is Sachin's brother, so Ranjan — the parent's brother — is Jagat's paternal uncle.

Cross-check: Tracing purely from Jagat's side confirms it — his parent is Sachin, and Sachin's sibling is Ranjan, so the parent's-brother slot is filled by Ranjan alone; Sachin himself occupies the parent slot (not the uncle slot) and Manick sits a further generation back as the grandparent, so neither fits the definition of uncle being asked for.