Explanation

1. 3/4 of the students do not know either Hindi or English.

This means that 1 - 3/4 = 1/4 of the students know either Hindi or English or both.

2. 1/6 of the students know English.

3. 1/8 of the students know Hindi.

Now, let's use the principle of inclusion-exclusion:

Number of students who know either Hindi or English or both = Number of students who know English + Number of students who know Hindi - Number of students who know both

We know that 1/4 of the students know either Hindi or English or both. We also know the number of students who know English (1/6) and the number of students who know Hindi (1/8).

Let x be the number of students who know both English and Hindi.

Then, we can set up the equation:

1/4 = 1/6 + 1/8 - x

Combine like terms:

1/4 = 7/24 - x

Add x to both sides:

x = 7/24 - 1/4

x = 7/24 - 6/24

x = 1/24

So, 1/24 of the students know both English and Hindi.

Explanation

BeiDou is the name of China's navigation system.

It is a global satellite navigation system developed by China to provide accurate positioning and timing information worldwide.

Explanation

An adverb of frequency is used to indicate how often something happens (e.g., always, often, rarely, never).

It answers the question "How often?"

Explanation

"تاج العروس" دراصل لغت کی ایک مشہور اور مستند کتاب ہے،

جو عربی زبان کے الفاظ اور ان کے معانی کو تفصیل سے بیان کرتی ہے۔

یہ کتاب سید مرتضی زبیدی نے لکھی ہے اور یہ "قاموس المحیط" کی شرح ہے۔

Explanation

Kala Pani Jail, also known as Cellular Jail,

It is located in the Andaman and Nicobar Islands

Kalan Kot Fort was built probably in 14th century along with Thatta.

It is located 5km south of Makli.

Explanation

Title: Cutting Edge: My Autobiography

Authors: Javed Miandad, Saad Shafqat

Publisher: Oxford University Press, 2003

Explanation

The thyroid gland is part of the endocrine system and produces thyroid hormones,

which deficiency can cause goiter disease.

Cells producing thyroid hormones extract and absorb iodine from the blood and incorporate them into the thyroid hormones.

Explanation

Systematic sampling technique is the technique which is generally followed when the population is finite.

Explanation

In the 1968 Olympics held in Mexico City, American athlete Dick Fosbury introduced a revolutionary technique in the high jump,

Known as the Fosbury Flop.

Where he won Gold Medal.

High Jump(Dimension):

• landing area: 5m length, 3m width, and 80cm height

• crossbar: length 3.98m to 4.02m.

• Distance between uprights: 4 to 4.04m

• runway: 15 to 20 meters

Explanation

Fifty rupees is not a big amount.

پچاس روپے ______ کوئی بڑی رقم نہیں۔

Although "rupees" is plural, the amount is treated as a single unit.

So the singular verb "is" is used.