Question

convert deicmal(81)10 to binary form (?)2​

Answer 1

Step 1: Divide (81)10 successively by 2 until the quotient is 0:

✯ 81/2 = 40, remainder is 1

✯ 40/2 = 20, remainder is 0

✯ 20/2 = 10, remainder is 0

✯ 10/2 = 5, remainder is 0

✯ 5/2 = 2, remainder is 1

✯ 2/2 = 1, remainder is 0

✯ 1/2 = 0, remainder is 1

Step 2: Read from the bottom (MSB) to top (LSB)

as 1010001.

So, 1010001 is the binary equivalent of decimal number 81 (Answer).