CSATNumber System & SeriesArithmetic of Prime Numbers2025

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 k?

A

4

B

5

C

6

D

7

Correct Answer: Option B

Explanation

We need to find the number o

More Number System & Series PYQs

View all Number System & Series questions →

Master UPSC Revision

Get 10,000+ topic-wise MCQs, spaced repetition, daily CSAT challenges, and detailed performance analytics.

Coming Soon to Play Store
Coming Soon to Play Store