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The video that I am adding here is a new upload in Youtube. Here is the link: https://www.youtube.com/watch?v=aUl28Pjz89M

I have seen many videos on 21-card trick and also read many blogs on it. A very few of them has attempted to explain why this trick works. The ones give the proof, is pretty involved and requires some inclination towards the subject to understand this. But, this video has taken a totally different approach to explain the trick and why it works in a visual way. The approach is easy to understand for anyone. This is a great way of helping students get attracted towards Mathematics.

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