Signal Mystery: At Least 2 Flags! | Permutations Example 4
Автор: Milap Integration
Загружено: 2026-01-03
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🚩🚩 A trickier signal problem! Example 4: Using at least 2 flags from 5.
Milap Integration breaks down this problem involving multiple permutation scenarios.
❓ Problem Statement:
Find the number of different signals using at least 2 flags (one below other) from 5 different flags.
🧩 Solution Approach:
• "At least 2" means we need signals with 2 flags, 3 flags, 4 flags, and 5 flags.
• Calculate permutations for each case (5P2 + 5P3 + 5P4 + 5P5).
• Sum them up for the final answer.
⬅️ Previous Video: Example 3
➡️ Next Video: Example 5 - Evaluating Factorials
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