WAEC Mathematics 2025 Paper

Concept:Probability is the ratio of favourable outcomes to the total number of possible outcomes when two dice are rolled.Explanation:When two fair dice are tossed, the total number of possible outcomes is $6 \times 6 = 36$.We need the sum to be at least $10$, so the possible sums are $10$, $11$, and $12$.Outcomes giving sum $10$: $(4,6)$, $(5,5)$, $(6,4)$ — 3 outcomes.Outcomes giving sum $11$: $(5,6)$, $(6,5)$ — 2 outcomes.Outcomes giving sum $12$: $(6,6)$ — 1 outcome.Total favourable outcomes $= 3 + 2 + 1 = 6$.Thus, $P(\text{sum} \geq 10) = \frac{6}{36} = \frac{1}{6}$.Answer:$\frac{1}{6}$, which corresponds to option A.