Trick 555 - Multiplication by 9s: Complete Video

Описание к видео Trick 555 - Multiplication by 9s: Complete Video

Shortcuts to do calculations mentally, useful for developing numerical aptitude and for success in competitive examinations....here is a video to learn how to multiply any number by 9s within 3 seconds time without the use of pen and paper.....many subscribers wanted me to this in a single video.....for more amazing shortcuts, keep visiting:
   / @sureshaggarwal  

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