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In a base-5 numeral system, which of the following digits is not valid?

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Question: In a base-5 numeral system, which of the following digits is not valid?

Options:

  1. 0
  2. 1
  3. 2
  4. 5

Correct Answer: 5

Solution: 

In a base-5 numeral system, valid digits are 0, 1, 2, 3, and 4; thus, 5 is not valid.

In a base-5 numeral system, which of the following digits is not valid?

Practice Questions

Q1
In a base-5 numeral system, which of the following digits is not valid?
  1. 0
  2. 1
  3. 2
  4. 5

Questions & Step-by-Step Solutions

In a base-5 numeral system, which of the following digits is not valid?
  • Step 1: Understand what a base-5 numeral system is. It means that numbers are represented using only five digits.
  • Step 2: Identify the valid digits in a base-5 system. The valid digits are 0, 1, 2, 3, and 4.
  • Step 3: Check the list of digits provided in the question to see if any of them are outside the valid range.
  • Step 4: Notice that the digit '5' is mentioned. Since '5' is not one of the valid digits (0, 1, 2, 3, 4), it is not valid.
  • Base Number Systems – Understanding the digits that can be used in different base systems, specifically base-5 in this case.
  • Digit Validity – Identifying which digits are valid in a given numeral system.
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