Hey Nothing Amazing........... :D
This is based on a simple concept...............
In any two digit number, if you deduct sum of the digits of the number from the actual two digit number the resultant number would be either 9 or sum of the digits of the resultant number would be 9.
In the AMAZING piece......... if you observe it clearly the symbol show for 0 and all the multiples of 9 are same so this is an amazing stuff.......
Example : If you take the number 23 and deduct sum of the digits it would be 5 (2+3) if this number is deducted from 23 the resultant number would be 18 which is multiple of 9.............
Am sure everyone must be knowing this......... just as my message to this i have posted this.............
Best Regards
P.J.Ram - Hyderabad