A friend of mine asked me to write down any multidigit number. But, he put a condition, the
number should not end with a zero.
I put down the number 96452
Then he asked me to add up the five digits and subtract the total from the original number.
I did and here is what I got:
96452 – 26 = 96426
He then asked me to cross out any one of the five digits and tell him the remaining numbers. I
crossed out the 2 and told him the rest of the digits. I neither told him the original number nor
what I had done with it. Yet ‘pop’ he told me the exact number I had crossed out.
How did you explain it?