What is the binary number equivalent to decimal number 1011?

• Correct answer
  A

  $1011$
• B

  $111011$
• C

  $11111001$
• D

  $111110011$

Solution

(Bonus) $(1011)_{10}=(1111110011)_2$
$\therefore \quad(1011)_{10}=(1111110011)_2$.

Hence, the correct answer is option: 'A'.