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    Discrete Mathematics and Its Applications Study Set 1
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    Exam 6: A: Counting
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    Let a Be the Set of All Strings of Decimal
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Let a Be the Set of All Strings of Decimal

Question 17

Question 17

Short Answer

let A be the set of all strings of decimal digits of length five. For example, 00312 and 19483
are strings in A.
-How many strings in A begin with 774?

Correct Answer:

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