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Binary Addition. Example 3.
Problem: 100101 + 10101 = ?.
Answer: 100101 + 10101 = 111010.
Explanation:
| first column (from the right!) : | 1 + 1 = 0 carry 1 |
| second column : | 0 + 0 + 1 (carried) = 1 |
| third column : | 1 + 1 + no carry = 0 carry 1 |
| fourth column : | 0 + 0 + 1 (carried) = 1 |
| fifth column : | 0 + 1 + no carry = 1 |
| sixth column : | 1 + 0 + no carry = 1 |
Therefore the answer is 1 1 1 0 1 0!
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