What Is A Cipher? A Complete Overview

Learning English With Oxford on Instagram: "What’s the difference between say and tell? 🗣️ ✨ Use "say" when you don’t mention who you're speaking to. ✔️ I said it was a great idea. ✨ Use "tell" when you do mention the listener. ✔️ I told her it was a great idea. 🎯 If there’s a person after the verb, go with tell. No person? Use say. . . . . . #EnglishTips #GrammarMadeEasy #SayVsTell #LanguageLearning #EnglishLearning"

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11 Cryptographic Methods That Marked History: From the Caesar Cipher to Enigma Code and Beyond