A trial balance may balance even when each of the following occurs except when
a. a transaction is not journalized.
b. a journal entry is posted twice.
c. incorrect accounts are used in journalizing.
d. a transposition error is made.
The correct answer and explanation is :
Correct Answer: d. a transposition error is made.
A trial balance is a bookkeeping worksheet in which the balances of all ledgers are compiled into debit and credit account column totals that are equal. While the equality of debits and credits is essential, it does not guarantee the absence of all types of errors. The question asks for the exception—that is, the situation in which the trial balance does not balance.
Let’s examine each option:
a. A transaction is not journalized
If a transaction is not journalized, it means it was never recorded. Since it is completely omitted, both debit and credit sides are missing, and the trial balance can still balance. This is known as an error of omission.
b. A journal entry is posted twice
If a correct journal entry is posted twice, it results in both the debit and credit being doubled. This maintains the balance in the trial balance, even though the financial data is inaccurate. This is an example of an error of duplication.
c. Incorrect accounts are used in journalizing
If a transaction is recorded using the wrong accounts but the correct debit and credit amounts are used, the trial balance will still balance. This is a classification error, not a mathematical one.
d. A transposition error is made
A transposition error occurs when two digits are reversed (for example, writing 54 instead of 45). This results in an incorrect figure being posted. If the transposed number is recorded only on one side (debit or credit), the trial balance will not balance, because the equality between debits and credits is disrupted. This type of error is usually detectable by reviewing the trial balance, as the difference is often divisible by 9.
Conclusion:
Option d is the correct answer because a transposition error affects the mathematical balance of the trial balance, making it the only error listed that prevents the trial balance from balancing. The other errors involve accuracy of the data but not the equality of debit and credit totals.