How to Calculate Faster than a Calculator. Mental Maths-6 (50k Subscribers special)

First of All Thank you for 50,000 subscribers! this means a lot ! and also welcome to the 6th part of the mental maths series and now I will share tricks from the book of sakuntala devi so I hope you enjoy this video!





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A Game for mental maths- https://play.google.com/store/apps/de...
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