Explanation

• Fidel Castro was the leader of Cuba.
• He led the Cuban Revolution and came to power in 1959.
• He served as Prime Minister of Cuba (1959–1976) and then as President (1976–2008).
• He born on 13 August 1926.
• He died on 25 November 2016 (aged 90).

Last verified on 08-08-2026

Explanation

• Hazrat Abu Bakr (RA), the first Caliph of Islam, ruled for approximately 2 years (2 years, 2 months, and 14 days).
• His caliphate lasted from 8 June 632 CE to 23 August 634 CE.
• He became the first Caliph after the death of Prophet Muhammad (ﷺ).
• He passed away due to illness in August 634 CE.

Additional information:

• Umar ibn al-Khattab: 10 years, 6 months, and 4 days
• Uthman ibn Affan: 11 years, 11 months, and 18 days
• Ali ibn Abi Talib: 4 years, 9 months, and 7 days

Last verified on 07-07-2026

Explanation

• The MAX function returns the largest value in a set of numbers in Excel.
• It compares all selected values and displays the highest one.
• It is commonly used for finding the maximum score, salary, or price.

Additional information:

• MIN() → Returns the smallest value
• AVERAGE() → Returns the average value
• COUNT() → Counts cells containing numbers
• SUM() → Adds all numbers

Last verified on 18-07-2026

Explanation

• Oranges are well-known for being rich in Vitamin C.
• It is essential for immune function, skin health, and other bodily processes.

Additional information 

• Vitamins are essential nutrients
• That your body requires in small amounts to function, grow, and develop properly.
• They are divided into two main groups:
• water-soluble (like Vitamin C and the B-vitamins)
• fat-soluble (like Vitamin A, D, E, and K)

Last updated by NA on 16-07-2026

Explanation

• Type: Operating System (Unix-like)
• Kernel Released: 17 September 1991
• Developer: Linus Torvalds
• License: Open-source (GNU General Public License)
• Common Distributions: Ubuntu, Debian, Fedora, Red Hat, Linux Mint

Last verified on 10-07-2026

Explanation

Selling price = Cost + 10% profit

220 = Cost + 0.10 × Cost

220 = 1.10 × Cost

Cost = 220 / 1.10

= 200

Last verified on 30-03-2026

Explanation

• Neptune is the farthest planet.
• It was visited by the spacecraft Voyager 2.
• It's is a very windy place.
• It has six rings.
• It has 14 moons.

Last verified on 24-06-2026

Explanation

• Location: Lahore, Punjab, Pakistan
• Built: 1642 AD
• Emperor Era: Mughal Empire Shah Jahan
• Commissioned by: Hakim Ilm-ud-din Ansari (Wazir Khan)

Last verified on 23-06-2026

Explanation

Explanation

• Albert Einstein was born in Germany, on March 14, 1879.
• He died on 18 April 1955 (aged 76) in the U.S.
• He is one of the most influential physicists of the 20th century.
• In 1905, he published four landmark papers in physics.

Last verified on 01-06-2026