Neco 2024 Computer Studies Question 36

Practice objective / multiple choice question 36 from the 2024 Neco Computer Studies examination.

Neco 2024 Computer Studies Objective / Multiple Choice Medium Difficulty
Question 36 NECO • 2024 • COMPUTER_STUDIES • objective

An organization requires passwords of length 8 characters. Each character can be an uppercase letter (26), a lowercase letter (26), a digit (10) or one of 10 special symbols. The policy mandates that a valid password must contain at least one uppercase letter, at least one digit, and at least one special symbol. Using inclusion‑exclusion, determine the total number of distinct passwords that satisfy the policy. Express your answer as a formula involving powers such as \(72^{8}\), \(46^{8}\), \(62^{8}\), \(36^{8}\), \(52^{8}\) and \(26^{8}\).

Answer Options

A. \(72^{8} - (46^{8}+2\times62^{8}) + (2\times36^{8}+52^{8}) + 26^{8}\)
B. \(72^{8} - (46^{8}+2\times62^{8}) - (2\times36^{8}+52^{8}) - 26^{8}\)
C. \(72^{8} - (46^{8}+2\times62^{8}) + (2\times36^{8}+52^{8}) - 2\times26^{8}\)
Correct Answer D. \(72^{8} - (46^{8}+2\times62^{8}) + (2\times36^{8}+52^{8}) - 26^{8}\)
Correct Answer
D
Correct Option:
\(72^{8} - (46^{8}+2\times62^{8}) + (2\times36^{8}+52^{8}) - 26^{8}\)

About This Question

This is Neco 2024 Computer Studies Question 36. It is one of the objective questions from the 2024 Neco Computer Studies examination.

Difficulty level: Medium .

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