Multiple choice

How many 1's are present in the binary representation of 15 * 256 + 5 * 16 + 3?

  1. 8

  2. 9

  3. 10

  4. 11

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calculate: 15 * 256 = 3840, 5 * 16 = 80, plus 3 = 3923. Binary: 3923 = 11110101011 (11 bits). Counting 1's: 1+1+1+1+0+1+0+1+0+1+1 = 8 ones.