Explanation

Arteries are blood vessels that carry oxygen-rich blood away from the heart to the body.

They have thick, muscular walls to handle the high pressure of blood pumped by the heart.

Explanation

Let's find the square numbers between 63 and 143:

8² = 64 (since 8² = 64 > 63)

9² = 81

10² = 100

11² = 121

The next square number would be 12² = 144, which is greater than 143, so we stop at 11².

Now, let's calculate the sum:

64 + 81 + 100 + 121 = 366

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

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

It moves from specific cases to a general rule.

Explanation

RBCs lack a nucleus to make more room for hemoglobin, which carries oxygen.

This structure helps them efficiently transport oxygen throughout the body.

Explanation

Explanation

A surd is an irrational number or expression containing a square root, cube root, etc., that can't be simplified to a rational number.

Example: √2, ³√5 are surds because they involve radical signs.

Explanation

Let's calculate:

5! = 5 × 4 × 3 × 2 × 1 = 120

√120 + 1 

√121 = √11×11

= 11

Explanation

Adjacent angles share a common vertex and a common arm.

They do not overlap, meaning no point lies in both interiors.