Multiple choice

The number of 1's present in the binary representation of (3 x 512 + 7 x 64 + 5 x 8 + 3) base 10 is

  1. 7

  2. 8

  3. 9

  4. 10

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

Calculate: 3 * 512 = 1536, 7 * 64 = 448, 5 * 8 = 40, plus 3 = 2027. Binary: 2027 = 11111101011. Counting 1's: 1+1+1+1+1+1+0+1+0+1+1 = 9 ones.