Explanation

A matrix is singular when its determinant is 0.

[4, 2; 6, 3]

Det = (4×3) - (2×6) = 12 - 12 = 0 → Singular

Explanation

If 1 ¥ = 1.81 Pak rupees, then:

1 Pak rupee = 1 / 1.81 ¥

= 0.55 ¥

Explanation

"Ourself" is incorrect – It should be "ourselves" because the subject "we" is plural and needs the plural reflexive pronoun.

The correct sentence is: "We made ourselves tea and talked about the good old days."

Explanation

"Who" is a relative pronoun connecting the noun "man" to the clause "lives next door to me."

It introduces a relative clause that gives more information about the noun.

Explanation

Inductive reasoning involves observing patterns or examples and forming a generalized conclusion.

It moves from specific cases to a general rule.

Explanation

Let's find the fourth proportional.

If 8 : 4 :: 2 : x, then

8/4 = 2/x

2 = 2/x

x = 1

Explanation

The preposition "in" is used to show something is inside a space or place.

Furniture is inside a room, so "in their room" is the correct usage.

Explanation

Prosper means ترقی

Decline means گراوٹ

Explanation

Basically means بنیادی طور پر

Extra means اضافی یا بنیادی سے پرے

Explanation

Below is used to indicate a lower position than sea level.

Example: The lake is 900 feet below sea level.