One of the first recorded uses of statistics was in the 9th century by an Arab Muslim philosopher, Al-Kindi. He was studying cryptanalysis, or codebreaking, and realized that the most frequently occurring letters in a cypher should correspond to the most frequently occurring letters in the alphabe. Determine and explain what the most frequently occurring letters are in the English alphabet and what their frequencies are. Explain how you would break this code. qnswtljruljynse! vnr ftnoc jmc qndc.

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A:

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