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Author Question: A computer password is made up of four characters. Each character can be a capital letter (A through ... (Read 179 times)

bucstennis@aim.com

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on: May 5, 2020

Question 1

A computer password is made up of four characters. Each character can be a capital letter (A through Z), a lowercase letter (a through z) or a digit (0 through 9).

How many passwords have 3 letters (uppercase or lowercase) and only one digit?
◦ 4 × 523 × 10
◦ 4 × 52× 10
◦ 523 × 10
◦ 52 × 51 × 50 × 10
◦ none of these

Question 2

A computer password is made up of four characters. Each character can be a capital letter (A through Z), a lowercase letter (a through z) or a digit (0 through 9).

How many passwords do not contain the uppercase letter O, the lowercase o, or the number 0?
◦ 624 - 3
◦ 594
◦ 59 × 58 × 57 ×56
◦ 62 × 25 × 25 × 9
◦ none of these
Excursions in Modern Mathematics ¦ Tannenbaum ¦ 9th Edition
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Marked as best answer by bucstennis@aim.com on May 5, 2020

aliotak

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Reply #1 on: May 5, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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bucstennis@aim.com

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Reply 2 on: May 5, 2020
Wow, this really help

aliotak

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Reply 3 on: Yesterday
Gracias!

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