Question

In the binary number system 100 + 1011 is equal to
(a) 1000 (b) 1011
(c) 1110 (d) 1111

Answer 1

In binary number system,

(100)₂ = (4)₁₀

(1011)₂ = (11)₁₀

Then,

(100)₂ + (1011)₂ = (4)₁₀ + (11)₁₀

(100)₂ + (1011)₂ = (15)₁₀

(100)₂ + (1011)₂ = (1111)₁₀

Hence (d) is the answer.