BECE Mathematics 2023 Paper

Concept:Integers are whole numbers and their negatives, including zero, but they do not include fractions or decimals.Explanation:Integers are the set $\{\dots, -3, -2, -1, 0, 1, 2, 3, \dots\}$.They can be positive, negative, or zero, but never fractional or decimal.Check each option:$0$ is an integer.$1$ is an integer.$0.5$ is a decimal or fraction, so it is not an integer.$-5$ is a negative integer.Therefore, $0.5$ is the only non-integer among the given options.Answer:Option C, i.e. $0.5$, is not an integer.