A bank customer had Rs. 100 in his account. He then made 6 withdrawals, totaling Rs. 100. He kept a record of these withdrawals, and the balance remaining in the account, as follows:
| Withdrawals | Balance left |
|---|
| Rs. 50 | Rs. 50 |
| Rs. 25 | Rs. 25 |
| Rs. 10 | Rs. 15 |
| Rs. 8 | Rs. 7 |
| Rs. 5 | Rs. 2 |
| Rs. 2 | Rs. 0 |
| Rs. 100 | Rs. 99 |
So, why are the totals not exactly right?
