WAEC Computer Studies 2020 Paper

Concept:A hexadecimal digit can hold one of 16 different values, so it needs enough bits to represent all 16 possibilities.Explanation:A single bit can represent only 2 values: $0$ and $1$.Two bits can represent $2^2 = 4$ values.Four bits can represent $2^4 = 16$ values.Since hexadecimal uses digits $0$ to $15$, four bits are required.These four bits are also called a nibble or nybble.Answer:C. four bits.