Explanation

A Speaker is an audio output device and cannot produce hard copies (physical prints).

Devices like printers, impact printers, and plotters are used to generate hard copy outputs.

Explanation

In modern versions of MS Word, you open the Header and Footer by clicking the "Insert" tab, then choosing "Header" or "Footer."

This allows you to edit and customize content at the top or bottom of every page.

Explanation

Let's simplify the expression:

√3 × √5 × √15

= √(3 × 5 × 15)

= √(225)

= 15

Explanation

"Pinned to" indicates attachment — the paper is fixed onto the surface of the poster.

It correctly shows the action of fastening one item to another.

Explanation

Windows is an operating system developed by Microsoft Corporation.

It is widely used on personal computers.

It offers a graphical user interface (GUI).

Explanation

Eukaryotic cells have a well-defined nucleus enclosed by a nuclear membrane.

Prokaryotic cells lack a nucleus — their DNA floats freely in the cytoplasm.

This is the main difference between the two.

Explanation

Given A = p + prt, we need to solve for t.

Step 1: Subtract p from both sides

A - p = prt

Step 2: Divide both sides by pr

(A - p) / pr = t

The answer is A-p/pr.

Explanation

We learn "about" someone when we gain information or understanding regarding them.

The source is the poem, so we say we learn this "in" the poem — where the information is found.

Explanation

The preposition "near" correctly shows closeness or proximity to a place.

Saying a house is near the school means it is close in distance, which fits the context.

Explanation

First, find the LCM of 3 and 5, which is 15.

Now, convert both fractions:

5/3 = 25/15

2/5 = 6/15

Subtract:

25/15 - 6/15 = 19/15