Question: how many different passwords are possible if: (a) 3 digits followed by 4 letter, letter can be repeated. (b) 2 digits followed by 5 letters,

how many different passwords are possible if: (a) 3 digits followed by 4 letter, letter can be repeated. (b) 2 digits followed by 5 letters, letters cannot be repeated

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3. Why is the following statement, If the Church is a context, it is because it is inside our heads, correct?