Favourable outcomes = 26
i) Vowels Favourable outcomes = 21
∴ Probability = 12/26 = 6/13
ii) Vowel and Consonants Favourable outcomes = 0
∴ Probability = 0/26 = 0
iii) A letter comes before M Favourable outcomes =12
∴ Probability = 12/26 = 6/13
iv) Not a vowel Favourable outcomes = 21
∴ Probability = 21/26