A bank customer had $100 in his account. He then made 6 withdrawals, totaling $100. He kept a record of these withdrawals, and the balance remaining in the account, as follows:


Withdrawals........Balance Left
$50...................$50
$25...................$25
$10...................$15
$8.....................$7
$5.....................$2
$2.....................$0
___________________
$100..................$99

When he added up the columns as above, he assumed that he must owe $1 to the bank. Was he right?