What is the next letter in the series AZEBIYO D?M?U?C?H? AND WHY?

Answer 1

C because A is followed by the last letter of the alphabet, E is followed by the 2nd letter of the alphabet, I is followed by the 2nd to last letter of the alphabet so O should be followed by the 3rd letter of the alphabet. After the C sould come U.

Answer 2

C

Every other letter is a vowel, every other is a consonant.

Every other consonant is from A-Z, every other consonant is from Z-A