Explanation

Step 1: Find A'

A' = I - A = {a, b, c, e, f, g} - {b, e, f} = {a, c, g}.

Step 2: Find B'

B' = I - B = {a, b, c, e, f, g} - {a, b, c} = {e, f, g}.

Step 3: Find A' ∩ B'

A' ∩ B' = {a, c, g} ∩ {e, f, g} = {g}.

Explanation

Let's denote the cost of a geometry box as x. Since the cost of a bag is three times the cost of a geometry box, the cost of a bag is 3x.

Given that the cost of 2 bags and 3 geometry boxes is Rs.3,960, we can set up the equation:

2(3x) + 3(x) = 3960

6x + 3x = 3960

9x = 3960

Divide both sides by 9:

x = 3960 / 9

x = 440

Explanation

Development includes learning from experiences (internal/external stimulation) and physical, cognitive, and emotional growth.

It is a comprehensive process involving both maturation and learning as a person progresses toward maturity.

Explanation

For adjectives like "thrilling" (with more than one syllable), the superlative is formed using "most".

So, the correct form is: "the most thrilling" — used to compare more than two things.

Explanation

Personality refers to the enduring patterns of thoughts, emotions, and behaviors that define how a person consistently interacts with the world.

It is shaped by biological, psychological, and environmental factors, and remains relatively stable over time.

Explanation

Explanation

This house was built by them in 1990.

The sentence is in past simple tense ("built"), so passive voice becomes "was built."

The object "this house" becomes the subject in passive voice.

Explanation

Ball has a long vowel sound (/ɔː/) as in "ball."

Dog has a short vowel sound (/ɒ/ or /ɔː/ depending on dialect, but generally short).

Hat has a short vowel sound (/æ/).

Big has a short vowel sound (/ɪ/).

Explanation

Most low Earth orbit space stations, like the ISS, complete one full orbit in about 90 minutes.

This allows them to circle the Earth roughly 16 times per day.

Explanation

Helium (He) is a noble gas.

Its atoms do not naturally bond with each other under standard conditions.

It exists as monoatomic (single-atom) molecules.

Nitrogen (N₂), Oxygen (O₂), and Hydrogen (H₂) are diatomic molecules.

It means they naturally form bonds between two atoms of the same element.