WAEC Computer Studies 2020 Paper

Concept:Convert a decimal fraction to binary by repeatedly multiplying the fractional part by $2$ and recording the integer parts.Explanation:Start with $0.9375$.$0.9375 \times 2 = 1.875$ → integer part is $1$, fractional part is $0.875$.$0.875 \times 2 = 1.75$ → integer part is $1$, fractional part is $0.75$.$0.75 \times 2 = 1.5$ → integer part is $1$, fractional part is $0.5$.$0.5 \times 2 = 1.0$ → integer part is $1$, fractional part is $0$.Read the integer parts from top to bottom: $0.1111_2$.Therefore, $0.9375_{10} = 0.1111_2$.Answer:C. $0.1111$