The Magic and Math of Mental Calculation by Art Benjamin

[@keniangervo8417]

I gotta say the grand finale of Art Benjamin always amazes me!

[@MattiK2609]

+Keni Angervo same here! I always check the result myself..and the more digits he gets right, the wider my mouth opens..every single time! :)

[@Salaisuresh]

Sad that views are less than for a $%%^$^ gossip.... Kudos to Dr.Arthur for breaking open the secrets, despite the taker's attitude!!! Great attitude Sir!!!

[@jobsucks]

I’ve been searching so many of his presentation. Finally found an explanation of how he guessed the missing number

[@milindmore7093]

He has mastered Vedic Mathematics.

[@samarsingh9374]

Milind More a

[@kwilson5832]

I do the 'working out the day of the week of any date' as well, but I do it slightly differently. My way sounds more complicated than Arthur's, but I find it easier because I don't have to remember a lot of year codes. For my version, I work out how many years since the last February 29th eg if the date is 13th July 1913, then the last 'leap day' (Feb 29th) was 1912, so I add '1'. Now I deduct 1900 from that leap year. 1912 - 1900 = 12. Then I add whatever I need to make this number a multiple of 7. I need to add 2 to 12 to get 14, so my year code is 1 + 2 = 3. For 8th February 1996, the last 'leap day' was four years ago, so my year code is 4 + 1 (the one is 1996 - 1900 = 96. 96 divided by 2 is 48, add 1 to get 49). To work out previous (or future centuries), I work out the same date in the 1900s, so if I wanted to know 13th July 1813 then I would use the same method as above. To adjust for the different century, just add two days for each century you go back, or deduct 2 days for each century in the future. 13th July 1913 was a Sunday, so 13th July 1813 was a Tuesday. This method will work for any date between 1600 and 2400. It won't work outside these dates, as it assumes that every fourth year is a leap year, but 1600 and 2400 aren't leap years.

[@topmindspod]

This is really enlightening.

[@supermushroomDX]

I have the Secrets of Mental Math book mentioned at 5:55.

[@Salaisuresh]

Great!!! uploaded to your head?!?! Dont get serious, pl...!

[@vedicmathsandspeedmathsbyr6595]

Super sir 🎈🎈🙏

[@sunderrao7283]

can u say the how to do multiplication with in seconds

[@MAAvideo]

The Magic and Math of Mental Calculation by Art Benjamin "If I were performing for a different sort of audience, like, say, at the Magic Castle in Hollywood, I might follow this up with other feats of magic and mind," mathemagician (and Harvey Mudd College professor) Art Benjamin told the 300-plus people gathered at the Carnegie Institution for Science on October 23 to hear him speak. See more at: bit.ly/1dNujjD

[@computerexperts903]

This Was Amazing..!

[@Studyin_maths]

Sir ,this is not clear seen,....plz upload new clear video

[@smorrow]

Bill Ritchie is Dennis Ritchie's actual brother btw.

[@cameron8847]

Watch his video on how to square numbers mentally.

[@kyllejuban8999]

Give me a 3 paragraph on this video

[@kurtjuliandemonteverde3916]

Nako pooooo HAHAHHA

[@artyzach]

This is amazing. :D

[@mdtauseefibrahim323]

Wizard of Arthimatic.

[@filename1674]

Start at 6:20 Thank me Later

[@deanarond8889]

I am currently squaring 10-digit numbers in my head.

[@MCGhostnutPlayz]

Proof plz

[@WalterKingstone]

Lol

[@letsbaitthelog6091]

Poda de

[@Shejil1234]

i think he s using some other trick to calculate square:-)

[@letsbaitthelog6091]

No he do some mnemonics

[@arunmatolia3546]

And he is not an asian.

[@balrajumoluguri837]

Ax+by=cz solved this problem aploded office email id