Explanation

The set {0, ±1, ±2, ±3, ±4, ...} includes all positive, negative integers, and zero.

This set is called the set of integers.

Explanation

"Idealistic" implies that teachers should embody high moral and ethical standards, serving as role models for students.

Explanation

30% = 30/100 = 0.3

Explanation

AGGRESSIVE means جارحانہ

Quarrelsome means جھگڑا

Explanation

Louse is an irregular noun; its plural form is lice.

This follows the same pattern as mouse → mice.

Explanation

"Must" expresses necessity or obligation, which fits the expectation from a Head Prefect.

It indicates that being exemplary is a required quality for the role.

Explanation

3/8 of 40 = (3/8) × 40 = 120/8 = 15

Explanation

1/3 × 3/5 = 1 × 3/ 3 × 5 = 3/15 = 1/5

Explanation

Aristocracy means اشرافیہ

Explanation

HBV is Highly Contagious:

Transmitted through blood, semen, and other body fluids.

10 times more infectious than HCV and 50–100 times more infectious than HIV.

Can survive outside the body for up to 7 days, increasing transmission risk.