Neco 2021 Computer Studies Question 38

Practice objective / multiple choice question 38 from the 2021 Neco Computer Studies examination.

Neco 2021 Computer Studies Objective / Multiple Choice Medium Difficulty
Question 38 NECO • 2021 • COMPUTER_STUDIES • objective

A password policy requires passwords to be exactly eight characters long. Each password must contain at least one uppercase English letter (26 possibilities), at least one digit (10 possibilities), and at least one special character chosen from \{!, @, #, $\} (4 possibilities). The remaining characters may be any uppercase letter, lowercase letter (26), digit, or special character, and characters may be repeated. How many different passwords satisfy the policy?

Answer Options

A. 66^{8} - 40^{8} - 56^{8} - 62^{8} + 30^{8} + 36^{8} + 52^{8}
Correct Answer B. 66^{8} - 40^{8} - 56^{8} - 62^{8} + 30^{8} + 36^{8} + 52^{8} - 26^{8}
C. 66^{8} - 40^{8} - 56^{8} - 62^{8} + 30^{8} + 36^{8} - 52^{8} - 26^{8}
D. 66^{8} - 40^{8} - 56^{8} - 62^{8} + 30^{8} + 36^{8} + 52^{8} - 28^{8}
Correct Answer
B
Correct Option:
66^{8} - 40^{8} - 56^{8} - 62^{8} + 30^{8} + 36^{8} + 52^{8} - 26^{8}

About This Question

This is Neco 2021 Computer Studies Question 38. It is one of the objective questions from the 2021 Neco Computer Studies examination.

Difficulty level: Medium .

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