Wood Little
11/08/2023 · Junior High School
Convert \( \mathrm{A}_{4} 5_{16} \) to octal. \( \mathrm{A} 015_{8} \) \( \mathrm{~B} 115_{8} \) \( 4115_{8} \) \( 5105_{8} \)
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Step-by-step Solution
To convert the hexadecimal number \( \mathrm{A}_{4} 5_{16} \) to octal, we can follow these steps:
1. **Convert from hexadecimal to decimal.**
2. **Convert from decimal to octal.**
### Step 1: Convert from hexadecimal to decimal
The hexadecimal number \( \mathrm{A}_{4} 5_{16} \) can be broken down as follows:
- \( \mathrm{A} = 10 \)
- \( 4 = 4 \)
- \( 5 = 5 \)
The positional values in hexadecimal (base 16) are \( 16^2, 16^1, \) and \( 16^0 \) respectively. Therefore, we can calculate the decimal value:
\[
\text{Decimal} = A \cdot 16^2 + 4 \cdot 16^1 + 5 \cdot 16^0
\]
\[
= 10 \cdot 256 + 4 \cdot 16 + 5 \cdot 1
\]
\[
= 2560 + 64 + 5
\]
\[
= 2629
\]
### Step 2: Convert from decimal to octal
Now we need to convert \( 2629 \) from decimal to octal. We do this by repeatedly dividing by \( 8 \) and keeping track of the remainders.
1. \( 2629 \div 8 = 328 \) remainder \( 5 \)
2. \( 328 \div 8 = 41 \) remainder \( 0 \)
3. \( 41 \div 8 = 5 \) remainder \( 1 \)
4. \( 5 \div 8 = 0 \) remainder \( 5 \)
Now we read the remainders from bottom to top to get the octal representation:
\[
2629_{10} = 5105_{8}
\]
### Conclusion
Thus, the octal representation of \( \mathrm{A}_{4} 5_{16} \) is \( 5105_{8} \).
The correct answer is:
\[
\boxed{5105_{8}}
\]
Quick Answer
The octal representation of \( \mathrm{A}_{4} 5_{16} \) is \( 5105_{8} \).
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