Explanation

The AND gate performs logical multiplication, outputting 1 only when all its inputs are 1.

It is also known as a conjunction gate in digital logic.

Explanation

An Operating System (OS) is a set of programs that manages computer hardware and software resources and coordinates tasks such as running applications.

It provides essential services like memory management, task scheduling, and file management for smooth computer operation.

Explanation

Pascaline was one of the first mechanical calculators.

It was invented by Blaise Pascal in 1642 to perform basic arithmetic operations.

It used gears and wheels to add and subtract numbers mechanically.

Explanation

When a teacher ensures students can use learned skills independently, they are promoting self-regulation, which helps students manage their learning and behavior autonomously.

This fosters critical thinking and problem-solving abilities, encouraging students to take responsibility for their own progress.

Explanation

Given: logₓ 0.09 = 2

Step 1: Convert to exponential form

x² = 0.09

Step 2: Solve for x

x = √0.09

x = √(9/100)

x = 3/10

x = 0.3.

Explanation

Let's denote Huma's age as x and Ali's age as y.

The given situation translates to:

2x + 3y = 54

This equation directly matches one of the options.

The answer is 2x + 3y = 54.

Explanation

Chymosin is an enzyme used as a clotting agent in the production of GMO cheese, helping to coagulate milk.

It is often produced using genetically modified microorganisms to ensure consistent quality and supply.

Explanation

The reporting verb "said" is in past tense, so the tense in the reported speech changes.

"Am" changes to "was", and "now" changes to "then".

So, "I am busy now" becomes "he was busy then" in indirect speech.

Explanation

In the Concrete Operational Stage (ages 7–11), children start thinking logically about concrete events.

They can understand concepts like conservation, time, space, and quantity, helping them manage their surroundings better.

Explanation

Khadija is thrice as old as her daughter, so:

K = 3D

The sum of their ages is 45:

K + D = 45

3D + D = 45

4D = 45

D = 45/4

D = 11.25 (12)