Explanation

30% of 50 students = (30/100) × 50 = 15

So, 15 students received an A grade.

Explanation

The union of two sets A and B includes all elements that are in A, B, or both.

This is represented as: A ∪ B = {x | x ∈ A or x ∈ B}.

Explanation

"Bad news" is an idiom used informally to describe someone who causes problems or brings trouble.

In this context, calling someone "bad news" implies they are a source of negativity or disruption.

Explanation

The hypotenuse is always opposite the right angle in a right-angled triangle.

Therefore, the angle opposite the hypotenuse is always 90°.

Explanation

The formula for each interior angle of a regular polygon is:

[(n – 2) × 180°] ÷ n

For a pentagon (n = 5):

[(5 – 2) × 180°] ÷ 5 = (3 × 180°) ÷ 5 = 540° ÷ 5 = 108°

Explanation

In 2020–21, India witnessed a massive protest by farmers against three agricultural laws passed by the central government.

Farmers, mainly from Punjab, Haryana, and Uttar Pradesh, camped on the borders of Delhi for months demanding repeal of the laws, which was later done in November 2021.

Explanation

The correct adjective order in English is: opinion → size → color → material → noun.

"Nice (opinion), long (size), pink (color), cotton (material)" is the right sequence before "Kurta".

Explanation

حجتہ اللہ البالغہ شاہ ولی اللہ کی مشہور کتاب ہے جو اسلامی فلسفہ اور شریعت کے مقاصد پر لکھی گئی۔

یہ کتاب دینی اصولوں کی عقلی و نقلی بنیادوں کو واضح کرتی ہے۔

Explanation

A washing machine uses an electric motor to produce mechanical motion for spinning and agitating clothes.

This is a clear example of converting electrical energy into mechanical energy.

Explanation

Indirect to direct narration: "She was having" changes back to "I am having" in direct speech.

Since the reporting verb "said" is in the past and there’s no change in time reference, present continuous remains valid in the direct form.