Which of the following is NOT a valid numeral in the octal system? (2023)

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Question: Which of the following is NOT a valid numeral in the octal system? (2023)

Options:

Correct Answer: 8

Exam Year: 2023

Solution:

The octal system only uses digits 0-7, so 8 is not a valid numeral.

Which of the following is NOT a valid numeral in the octal system? (2023)

Which of the following is NOT a valid numeral in the octal system? (2023)

Step 1: Understand what the octal system is. The octal system is a base-8 number system.
Step 2: Know the digits used in the octal system. The valid digits are 0, 1, 2, 3, 4, 5, 6, and 7.
Step 3: Look at the number 2023. Check each digit to see if it is between 0 and 7.
Step 4: Identify the digits in 2023. The digits are 2, 0, 2, and 3.
Step 5: Confirm that all digits (2, 0, 2, 3) are valid in the octal system since they are all between 0 and 7.
Step 6: Now, consider the number 8. Check if 8 is a valid digit in the octal system.
Step 7: Since 8 is not between 0 and 7, it is not a valid numeral in the octal system.

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