Explanation

Stood means کھڑا

Sat means بیٹھا

Explanation

To find Σ(x - 1), first calculate (x - 1) for each value:

(3 - 1) + (1 - 1) + (7 - 1) + (4 - 1)

= 2 + 0 + 6 + 3

= 11

Explanation

Blood type O has no A or B antigens on the surface of red blood cells.

That's why type O is known as the universal donor in blood transfusion.

Explanation

Boron is a metalloid, showing properties between metals and non-metals.

Aluminum is a metal.

Phosphorus is a non-metal.

Explanation

Mode is the value that occurs most frequently in a dataset.

It represents the most common or popular item in the data.

Explanation

"Because" shows the reason birds can fly easily — they have wings.

It correctly connects the cause and effect in the sentence.

Explanation

Direction: It is not enough for a detective to see things he must be able to reason quickly and accurately. That is to say, he must see with his mental eye as well as with his physical eye. All detectives talk about deducing things. Sherlock Holmes used to deduce a man's character by an examination of his watch, his walking stick, or his hat. His idea was that every criminal leaves a number of traces of his crimes. It is a detective business to notice them and to interpret them.

1. What is meant by the phrase Mental eye?

Means over sighting

2. Which statement is correct to the writer?

Every criminal leaves a number of traces of crime

Explanation

The square root of any prime number is not a perfect square.

Therefore, √𝑝 is irrational, meaning it cannot be expressed as a fraction of two integers.

Explanation

Waves produced by oscillation of material particles require a medium to travel, called mechanical waves.

Examples include sound waves and water waves.

Explanation

KE = 1/2mv²

Given m = 0.03 kg, v = 400 m/s

KE = 1/2 × 0.03 × 400 × 400

= 1/2 × 0.03 × 160000

= 1/2 × 4800

= 2400 J