easyMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: The binary representation of the decimal number…
What is the binary representation of the decimal number 10?
⚠ Common exam trap
Many candidates confuse the binary for 10 with the binary for 12 (1100) or 14 (1110) by misplacing the '1' bits, or they incorrectly convert by adding 1 to the binary for 9 (1001) instead of performing proper division.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
1010
The decimal number 10 is converted to binary by dividing by 2 repeatedly: 10 ÷ 2 = 5 remainder 0, 5 ÷ 2 = 2 remainder 1, 2 ÷ 2 = 1 remainder 0, 1 ÷ 2 = 0 remainder 1. Reading the remainders from bottom to top gives 1010. This matches option C.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
1001
Why it's wrong here
1001 binary equals 9 decimal.
- ✗
1110
Why it's wrong here
1110 binary equals 14 decimal.
- ✓
1010
Why this is correct
1010 binary equals 10 decimal.
- ✗
1100
Why it's wrong here
1100 binary equals 12 decimal.
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