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(4x1)+(2x0)+(1x1)=5. The first number is the place value. The second number is if there's a zero or a 1. Notice that the first number is half of the last first :) (last first) number. 1001=9. 1101=13. Who can do 10001101?

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15y ago
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Q: What is the decimal number of binary number 101?
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