Question:
The complement of \( 27_{10} \) is :
The complement of \( 27_{10} \) is :
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9's complement of 27 is 99 - 27 = 72.
Updated On: Oct 3, 2026
- \( 37_{10} \)
- \( 62_{10} \)
- \( 72_{10} \)
- \( 73_{10} \)
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
• We need the complement of the decimal number \( 27_{10} \).
Step 2: Detailed Explanation:
• For a two-digit decimal number, the 9's complement is obtained by subtracting each digit from 9: \( 99 - 27 = 72 \).
• Hence the complement of \( 27_{10} \) is \( 72_{10} \).
• The other options \( 37_{10} \), \( 62_{10} \) and \( 73_{10} \) do not match this result (73 would be the 10's complement, 100 - 27, which is not the option chosen by the key).
Step 3: Final Answer:
The correct option is (C) \( 72_{10} \).
• We need the complement of the decimal number \( 27_{10} \).
Step 2: Detailed Explanation:
• For a two-digit decimal number, the 9's complement is obtained by subtracting each digit from 9: \( 99 - 27 = 72 \).
• Hence the complement of \( 27_{10} \) is \( 72_{10} \).
• The other options \( 37_{10} \), \( 62_{10} \) and \( 73_{10} \) do not match this result (73 would be the 10's complement, 100 - 27, which is not the option chosen by the key).
Step 3: Final Answer:
The correct option is (C) \( 72_{10} \).
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