Rashi: why do we need a mnemonic to remember the makkot – it’s in the Chumash and in the Haggadah! Mnemonics are usually comprised of actual words, דצ”ך עד”ש באח”ב is not a word, it’s just the first letter of each one!
David HaMelech describes the 10 plagues out of order in Tehillim 78 and 105.
Answers from Rashi, Peirush Kadmon, the Avudraham, the Vilna Gaon, Rashbam, Rabbeinu Bachya, Rashbatz, Hagahot Maimoni, Daas Zekeinim, and others.
Shiur provided courtesy of Torah Anytime