**Riddle**: I have $50 with me, here is the summary of my spent and balance amount.

Now, How can the total amount be 50 for one column and 51 for another.

From where this extra one dollar came?

**Answer**: Actually there is no comparison of the sum of spent amount and sum of the remaining amount.

To make it easy to explain, let’s say we spend $1 each time thus total spend becomes $50 while if we sum the balance amount i.e. 49 + 48 + 47 …….+1,

it will be a very large number than $50.