Difficulty: Medium
Correct Answer: (41, 47, 53)
Explanation:
Introduction / Context:
We are given a sequence of three primes and asked to select another triplet showing a similar structure.
Given Data / Assumptions:
Concept / Approach:
Look for another all-prime triplet with modest even gaps, preserving the “all are primes, reasonably spaced” character (exact differences need not be identical but should reflect a similar prime-run feel).
Step-by-Step Solution:
Verification / Alternative check:
Confirm primality: 41, 47, 53 are prime; others listed contain composites.
Why Other Options Are Wrong:
They include non-primes (15, 21, 49, 25), breaking the “all-prime triplet” property.
Common Pitfalls:
Focusing only on constant differences without verifying primality of each member.
Final Answer:
(41, 47, 53)
Discussion & Comments