Which of the following Boolean algebra rules is correct ?

This question was previously asked in
NIELIT Scientific Assistant CS 5 Dec 2021 Official Paper
View all NIELIT Scientific Assistant Papers >
  1. A.A̅ = 1 
  2. A + AB = A +B 
  3. A(A + B) = B 
  4. A + A̅B = A + B

Answer (Detailed Solution Below)

Option 4 : A + A̅B = A + B
Free
NIELIT Scientific Assistant Quantitative Aptitude Mock Test
0.5 K Users
20 Questions 20 Marks 30 Mins

Detailed Solution

Download Solution PDF

The correct answer is Option 4.

key-point-image Key Points

  • The correct Boolean algebra rule is A + A̅B = A + B.
    • This rule can be derived using the Distributive Law and the Complement Law in Boolean algebra.
    • First, we use the Distributive Law: A + A̅B = (A + A̅)(A + B).
    • According to the Complement Law, (A + A̅) = 1.
    • So, (A + A̅)(A + B) = 1.(A + B) = A + B.
    • Therefore, the expression A + A̅B simplifies to A + B.

additional-information-image Additional Information

  • Boolean algebra is a branch of algebra that deals with true or false values, typically denoted as 1 and 0 respectively.
  • It is fundamental in the design of digital circuits and computer algorithms.
  • Basic operations in Boolean algebra include AND, OR, and NOT.
  • Boolean algebra helps in simplifying complex logical expressions and is used extensively in computer science and electrical engineering.
Latest NIELIT Scientific Assistant Updates

Last updated on Feb 20, 2025

-> A total number of 113 revised vacancies have been announced for the post of Scientific Assistant in Computer Science (CS), Information Technology (IT), and Electronics & Communication (EC) streams.

-> Online application form, last date has been extended up to from 17th April 2025.

->The NIELT has revised the Essential Qualifications for the post of Scientific Assistant. Candidates must possess (M.Sc.)/ (MS)/ (MCA) / (B.E.)/ (B.Tech) in relevant disciplines.

 

-> The NIELIT Scientific Assistant 2025 Notification has been released by the National Institute of Electronics and Information Technology (NIELIT).

Get Free Access Now
Hot Links: teen patti master golden india teen patti comfun card online teen patti master 51 bonus