R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 Reasoning Q. Complete the series.... 5, 21, 69, 213, 645,? (A) 1320 (B) 1941 (C) 720 (D) 1670 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) 1941 You must be Logged in to update hint/solution 💬 Discussion 💬 Comment