Explanation

Capitalism emphasizes private ownership of resources and businesses.

It supports a free market where supply and demand determine prices and production.

Explanation

Find LCM of 20, 30, and 40:

Prime factors:

20 = 2² × 5

30 = 2 × 3 × 5

40 = 2³ × 5

LCM = 2³ × 3 × 5 = 120 minutes

120 minutes = 2 hours, so if they ring together at 9:00 am, they will ring together again at 11:00 am.

Explanation

A seven-digit number starts from 1,000,000 and goes up to 9,999,999.

1000000 is the smallest possible number with exactly seven digits.

Explanation

I found my shoes under the bed.

"Under" shows something is beneath or lower than something else — here, beneath the bed.

It correctly indicates the position where shoes are typically found if they slide or are placed out of sight.

Explanation

In irregular (diffused) reflection, light rays hit a rough surface.

This causes them to reflect in different directions and angles.

Explanation

n(A × B) = n(A) × n(B) = 3 × 4 = 12.

Explanation

4³ = 4 × 4 × 4 = 64

Now, divide by 4:

64 ÷ 4 = 16

Explanation

The preposition "in" is used for months, years, and long periods.

Therefore, "in January" is the correct usage.

Explanation

Copper is a good conductor of heat.

That's why it’s used in cooking utensils and electrical wiring.

Wood, plastic, and glass are poor conductors (insulators), meaning they do not transfer heat easily.

Explanation

Let's denote the width as w and the length as 3w (since the length is thrice the width).

The area of the window is:

w × 3w = 3w²

Given area = 18.75 sqm

3w² = 18.75

w² = 18.75 / 3

w² = 6.25

w = √6.25

w = 2.5

Length = 3w

= 3 × 2.5

= 7.5