math magic

[canadianhorsepower]

First of all Merry Christmas to everyone
then try this math magic trick
pretty impressive shoe size is what we use in US

cheers

Luc

 

[Swifty]

Works out correct for me.

Paul.

 

[Shopguy]

I'll add my Merry Christmas wishes to all.
That is a neat piece of arithmetic.
Ernie Johnson

 

[AussieJimG]

Yep, it works out to be 100s + 2013 - y where s is the shoe size and y is your birth year.
So 2013 - y is your age (which must be =< 99) and 100s puts your shoe size in the "hundreds" column.

Next year it will work if you add 1014 instead of 1013.

Jim