How many questions on Number System (Prime Numbers) have appeared in UPSC exams?

A total of 2 UPSC questions on Number System (Prime Numbers) have been asked across different years and paper types on LearnPro.

Is Number System (Prime Numbers) important for UPSC Prelims?

Yes. Number System (Prime Numbers) has been tested 2 times in UPSC exams based on our PYQ data. It falls under the Basic Numeracy section and is a recurring topic.

UPSC Number System (Prime Numbers) — Previous Year Questions

All 2 UPSC questions on Number System (Prime Numbers) from 2024 to 2025 — with answers and detailed explanations.

2025(1 questions)

Prelims · CSAT

Q17. Let both p and k be prime numbers such that (p² + k) is also a prime number less than 30. What is the number of possible values of...

2024(1 questions)

Prelims · CSAT

Q20. 20. Consider the following statements in respect of the sum S = x + y + z, where x, y and z are distinct prime numbers each less t...

Master Number System (Prime Numbers) for UPSC

AI-powered notes and practice tests tailored to your weak areas.

Start Practicing →