Question: 3. a. How many integers from 1 through 999 do not have any repeated digits? b. How many integers from 1 through 999 have at

3. a. How many integers from 1 through 999 do not

3. a. How many integers from 1 through 999 do not have any repeated digits? b. How many integers from 1 through 999 have at least one repeated digit? 0. What is the probability that an integer chosen at random from 1 through 999 has at least one repeated digit

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5. How quickly can we manage to collect the information?

3. Tactical/strategic information.

3. To retrieve information from memory.