Explanation

A coin has 2 possible outcomes each time:

• Head (H)
• Tail (T)

If the coin is flipped 3 times, the total possible outcomes are:

2^3 = 8 

The possible outcomes are:

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT

Only one outcome gives 3 heads: HHH.

Therefore:

Formula

P(3 heads)=Favourable outcomes​/Total outcome=1/8

1/8=0.125 or 12.5%

Explanation

• UNO Headquarters: Manhattan, New York City.

Additional information:

• UNO Stands for: United Nations Organization
• Founded: 24 October 1945 (after World War II 1939–1945)
• Member States: 193 countries
• Official Languages (6): Arabic, Chinese, English, French, Russian, Spanish
• Motto: “It’s your world!” (commonly used awareness slogan)
• Pakistan Joined UNO: 30 September 1947

Last verified on 10-06-2026

Explanation

• Necessary means ضروری

Last verified on 09-02-2026

Explanation

There are five pillars of Islam:

1. First Pillar: Shahadatain (شہادتیں) –  Faith declaration
2. Second Pillar: Namaz (نماز) – five daily prayers
3. Third Pillar: Zakat (زکوٰۃ) – Obligatory charity (2.5% of wealth above Nisab)
4. Fourth Pillar: Fasting (Sawm / روزہ) – Ramadan fasting
5. Fifth Pillar: Hajj (حج) – Pilgrimage to Makkah once in a lifetime, if able

Last updated by NS on 5-09-2026

Explanation

• The standard other name for junk email is Spam.
• Junk email is unwanted and unsolicited email sent in bulk.
• It is commonly used for ads, scams, or fake promotions.

Additional information:

• Spoof means pretending to be another sender (email spoofing).
• Spam filters are used in email services to automatically block junk mail.

Last verified on 16-02-2026

Explanation

15% of 2000 = (15 ÷ 100) × 2000 = 300

Last verified on 10-07-2026

Explanation

• Ctrl + V is the shortcut key used to paste copied or cut text.

Additional information:

• Ctrl + C — Copy
• Ctrl + X — Cut
• Ctrl + Z — Undo
• Ctrl + A — Select All

Last verified on 23-08-2026

Explanation

• The capital of Japan is Tokyo. 
• Tokyo means "Eastern Capital".
• History: It became the imperial capital in 1868 after replacing Kyoto

• Japanese currency is the Yen.
• Japan's official language is Japanese.
• Japan is located in the Continent of Northeast Asia or East Asia.
• Japan's national sport is Judo. 
• The Japanese Parliament is called the Diet.

Last updated by NA on 09-09-2026

Last verified on 23-08-2026

Explanation

• The CPU (Central Processing Unit) is the brain/heart of the computer.
• It processes data and executes instructions.
• It controls other parts of the system.

Additional information:

• First commercial CPU: Intel 4004 (1971)
• Invented by: Italian physicist Federico Faggin
• CPU Examples: Clock speeds – 3.0 GHz, 3.5 GHz, 4.0 GHz, 4.5 GHz, 5.0 GHz

Last updated by NA on 09-09-2026

Explanation