Explanation

• مُعاذ بن جبل was a sahabi (companion) of the Islamic prophet Muhammad.
• He was an Ansar of Banu Khazraj
• He compiled the Quran with five companions
• Other names
• (إمام الفقهاء)
• (كنز العلماء) 
• (أعلم الأمة بالحلال والحرام) 

Explanation

Each group moves one letter forward, while the last letter skips one position:

Observe each position separately:

1st letters: A → B → C → D

2nd letters: B → C → D → E

3rd letters: C → D → E → F

4th letters: E → F → G → H

Therefore:

ABCE → BCDF → CDEG → DEFH

Explanation

• Light Year is the distance that light can travel in one year.
• The distance light travels in one year is known as light year.
• 1 light year is equal to 9.5 x 10¹²km.

Last verified on 30-03-2026

Explanation

• A Barometer is an instrument used to measure air (atmospheric) pressure.
• It helps in weather forecasting by measuring changes in atmospheric pressure.
• The mercury barometer is the oldest type of barometer.
• It was invented by Evangelista Torricelli in 1643.
• Barometers are widely used in meteorology and aviation.

Last verified on 09-07-2026

Explanation

• The Al-Hudaibiyah Treaty was signed in 6 AH for 10 years.
  
• It was scribed by Ali ibn Abi Talib (R.A).
• Hudaibiyah is the name of tree.
• It is referred to as "Fatah Al-Mubeen" (the clear victory) in Surah Al-Fatah.
• It was a pivotal agreement between Muhammad SAW representing Medina and the Qurayshi tribe of Mecca.
• Suhail bin Amr signed on behalf of Mecca.
• It contained 7 clauses.

Last verified on 01-04-2026

Explanation

• After the Battle of Yamama (632 AD), Hazrat Umar (R.A.) suggested compiling the Quran into one collection.
• Hazrat Abu Bakr (R.A.) initially hesitated but later accepted the suggestion.
• Hazrat Zaid bin Sabit (R.A.) was appointed to undertake the compilation.
• The compiled manuscript was kept with Hazrat Abu Bakr (R.A.), then Hazrat Umar (R.A.), and later Hazrat Hafsa (R.A.).

Last verified on 13-09-2026

Explanation

• The SQL command used to retrieve data from a database table is the SELECT statement.
• This command is fundamental to the Data Query Language (DQL) in SQL.

Last verified on 07-06-2026

Explanation

• The ALU (Arithmetic Logic Unit) is the core component of the CPU.
• It performs both arithmetic operations (calculations) and logical operations (comparisons).
• Without ALU, a computer cannot process data.
• ALU works together with the Control Unit (CU).

Last verified on 06-05-2026

Explanation

In the Tree of Rumour problem, one person passes the rumour to 2 other people every 5 minutes.

Therefore, the total number of people triples every 5 minutes.

0 minutes → 1 person

5 minutes → 3 persons

10 minutes → 9 persons

15 minutes → 27 persons

20 minutes → 81 persons

Using the formula:

3^20/5 =3^4 =81

Explanation

To determine the relationship, we can break down the family structure:

B and D are sisters: The problem states D is B's sister.

A is B's daughter: This makes B A's mother.

E is D's son: This makes D E's mother.

A and E's relationship: Since A's mother (B) and E's mother (D) are sisters, A and E are the children of siblings.

Therefore, A is the cousin of E. 

Question updated 03-March-2026