WAEC Mathematics 2015 Paper

Concept:A letter is selected from the English alphabet. We need the probability that the selected letter is one of the distinct letters appearing in the word MATHEMATICS.Explanation:In MATHEMATICS, the letters are M, A, T, H, E, M, A, T, I, C, S.Letters repeated do not give extra favourable outcomes.The distinct letters in MATHEMATICS are M, A, T, H, E, I, C, S.So, number of favourable letters $= 8$.Total letters in the English alphabet $= 26$.Required probability $= \frac{8}{26}$.Simplify: $\frac{8}{26} = \frac{4}{13}$.Answer:$\frac{4}{13}$, which is Option C.