Food S.I Math WBP , SSC GD 🎯 নল ও চৌবাচ্চার অংক পার্ট - 05 Pipe & Cisterns Maths in Bengali math

নল ও চৌবাচ্চার অংক পার্ট - 04 Pipe & Cisterns Maths in Bengali
✅ সম্পূর্ণ নল চৌবাচ্চা প্লে লিস্ট লিংক: নল-চৌবাচ্চার অংক: • নল-চৌবাচ্চার অংক
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Bengali Short Trick Math

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Ans. (D)- 30