PYTHON PROBLEM 028 · Intermediate

List primes up to n

List all prime numbers that do not exceed 20.

nested loop · primenested loopprime

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests list primes up to n. It belongs to the Loops and Repeated Work roadmap and uses the nested loop · prime pattern.

for, while, counters, accumulators, ranges, and stopping conditions.

COMPLETE WORKSPACE

Learn the plan, trace the logic and run the solution

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SKILL TO CARRY FORWARD

Pattern relevance

This exercise strengthens nested loop · prime. Be ready to explain the input, the rule, the boundary cases, and why the chosen approach is appropriate.