MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -In Boolean algebra, Idempotent Law states that combining a quantity with itself either by logical addition or logical multiplication will result in a logical sum or product that is the equivalent of the quantity. So, a+a=a.

Detailed explanation-2: -Idempotence is the property of certain operations in mathematics and computer science that they can be applied multiple times without changing the result beyond the initial application.

Detailed explanation-3: -The idempotent law states that x OR x is x and x AND x is x. The theorems of boolean algebra can be proved using Huntington postulates. Each postulate and theorem of boolean algebra has two parts; one is dual of another. If one part is proved the other one can be proved using duality principle.

Detailed explanation-4: -Examples in the real world If a call button inside an elevator is pressed then the elevator will go to the floor that is on the button. If it is pressed again then it will do the same thing. This means that the operation of pressing a button to make the elevator change floors is an idempotent operation.