Binary Arithmetic

Converting between number systems and performing basic arithmetic in binary.

📖 ~4 min read 💻 RRB NTPC / Group D — Computer Awareness

Repeatedly divide the decimal number by 2, recording remainders; read remainders bottom-to-top for the binary equivalent.

💡 Example: Convert 13 to binary → 13÷2=6 r1, 6÷2=3 r0, 3÷2=1 r1, 1÷2=0 r1 → Reading bottom-up: 1101

💡 Example: 1011 + 1101 → adding right to left with carries gives 11000

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