This is not magic its simple math Lets take A B C in the judge board and lets take the number as X 1. 7X ( multiply by 7) 2.7X +49 add 49 3.(7X+49)÷7 divide by 4.X+7 5.X+7-X=7 ( substract the number imagined) 6.7×18= 126 ( now we have a numeric value) 7.126+6= 132 What this guy does is byheart 132rd page few lines of all the books