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  Top 10 Excel Formulas You Must Know in 2025 ✨ Working with Excel becomes much easier when you know the right formulas. Most office reports, data entry tasks and analysis work depend on a few powerful functions. This guide explains the top ten Excel formulas with clear examples, simple tables and real situations you can practice. Whether you are a student, office worker or preparing for a job, these formulas will help you work faster and more accurately. 1. SUM Formula Use: Add numbers quickly. Formula: =SUM(A2:A6) Sample Table: A (Sales) 120 340 210 95 185 Result: =SUM(A2:A6) → 950 2. AVERAGE Formula Use: Find the average value. Formula: =AVERAGE(B2:B6) Sample Table: B (Marks) 88 76 92 84 80 Result: =AVERAGE(B2:B6) → 84 3. COUNT & COUNTA COUNT: Counts only numbers COUNTA: Counts numbers + text Sample Table: C 15 Michael 32 Emma 45 Results: =COUNT(C2:C6) → 3 =COUNTA(C2:C6) → 5 4. IF Formula Use: Check a condition and return result. Formula: =IF(D2>=60,"Pass","Fai...

  🏁 Formula 1: Full Story, How Races Work, Winners List, Locations, Speed, Costs & More Formula 1 is the highest level of motorsport. It takes place in many countries every year, featuring the world’s fastest racing cars, top drivers, and some of the most iconic circuits. Fans love it for the speed, the sound, the strategy and the international atmosphere. Below is a complete, easy-to-understand guide you can use directly in your blog. ⭐ What Is Formula 1 (F1)? Formula 1 is a global racing championship made up of a series of races called Grand Prix. These races happen on different tracks around the world. Drivers earn points in each race and the one with the most points at the end becomes the World Champion. 🌍 Countries Where F1 Races Are Conducted F1 is held worldwide. Below is the list of common race locations: 🇧🇭 Bahrain 🇸🇦 Saudi Arabia 🇦🇺 Australia 🇯🇵 Japan 🇨🇳 China 🇮🇹 Italy (2 races some seasons) 🇺🇸 USA (Miami, Austin, Las Vegas) 🇲🇨 Monaco 🇪🇸 Spain 🇦🇹...

Pi Network: A Beginner's Guide to Mobile Cryptocurrency Pi Network: A Beginner's Guide to Mobile Cryptocurrency Jump to Section: Select... What is Pi Network? How to Mine Pi Security Features Pi Coin Value Conclusion What is Pi Network? Pi Network is a digital currency project that allows users to mine Pi coins directly from their mobile devices. Unlike traditional cryptocurrencies like Bitcoin, Pi Network aims to make cryptocurrency mining accessible to everyone without the need for expensive hardware. How to Mine Pi Coins on Mobile Mining Pi is simple and beginner-friendly. Follow these steps: Download the Pi Network app from the Google Play Store or Apple App Store. Create an account and verify your identity. Pres...

  What is Bitcoin? Bitcoin (BTC) is the world’s first decentralized digital currency, created in 2009 by an anonymous person or group known as Satoshi Nakamoto. Unlike traditional currencies, Bitcoin is not controlled by any government or bank. It allows peer-to-peer transactions over the internet without intermediaries. Bitcoin uses a technology called blockchain , which is a secure digital ledger that records all transactions publicly and permanently.  How Does Bitcoin Work? Bitcoin works through a combination of blockchain technology, mining, and cryptography. Blockchain: Every Bitcoin transaction is recorded on a blockchain, shared across thousands of computers worldwide for transparency and security. Mining: Bitcoin is “mined” by solving complex mathematical problems using powerful computers. Miners validate transactions and earn BTC as a reward. Bitcoin Wallets: Users store Bitcoin in digital wallets, which can be software-based (mobile o...

  Introduction Many people wonder how a single pill can reduce headache, body pain, toothache, or joint pain. Does the tablet really know where the pain is? The truth is simple. Painkillers don’t have a brain. They don’t search for the problem. Your body itself guides the medicine to the right place. How Pain Happens in the Body Pain starts when the body releases chemicals called prostaglandins. These chemicals create : Inflammation Swelling Heat Pain signals to the brain When prostaglandins increase, you feel more pain. What Happens After You Swallow a Painkiller After you take a tablet: 1. It reaches the stomach. 2. It dissolves. 3. The medicine enters your bloodstream. 4. The blood carries it to every part of your body. The tablet doesn’t choose any body part. It just travels everywhere. So How Does the Medicine Know Where to Work? Very simple: Painkillers block the prostaglandin chemicals. Wherever prostaglandins are high, the medicine becomes active. For example: If prostaglan...

  Dettol is one of the most common antiseptics we use at home, but almost everyone feels a sharp burn when they put it on a cut. This reaction is normal and happens because Dettol contains strong germ-killing ingredients. When these ingredients touch broken skin, the exposed nerve endings react immediately, which creates the burning feeling. The main antiseptic in Dettol is chloroxylenol. It kills bacteria effectively, but it also irritates fresh wounds for a few seconds. Dettol may also contain alcohol, which adds to the sting because alcohol evaporates quickly and tends to irritate open skin. Fresh cuts are already inflamed, so even a mild antiseptic can feel aggressive when applied. The burning sensation usually settles in a short time. It doesn’t mean the wound is getting worse. If the cut is large or if someone has very sensitive skin, using saline water or a mild antiseptic wash is a more comfortable choice.

  Why Do Onions Make Us Cry? Simple Explanation Have you ever wondered why your eyes start watering the moment you cut an onion? It’s not sadness. It’s science. When you slice an onion, you break its cells. This releases an enzyme that reacts with the onion’s natural sulfur. Together, they create a gas called syn-propanethial-S-oxide. When this gas reaches your eyes, it mixes with your natural tears and forms a mild acid. Your eyes try to protect themselves and quickly produce more tears to wash the irritant away. That’s why you start crying. How to Stop Crying While Cutting Onions • Refrigerate the onion for 20 to 30 minutes before cutting • Use a sharp knife to reduce cell damage • Cut near a fan or running water to push the gas away • Leave the root end for last because it releases the strongest gas

 Why High-Voltage Cables (220 kV and Above) Are on Towers, Not Underground High-voltage transmission towers and lines near Celilo Converter Station, Oregon. Image by Stefan Andrej Shambora, licensed under CC BY 2.0. When you look around cities and highways, you’ll often notice tall towers carrying thick electricity cables across long distances. These are high-voltage transmission lines, usually 220 kV and above. A common question people ask is: why don’t we just put them underground like regular power cables? The answer comes down to safety, cost, and practicality. 1. Safety and Insulation High-voltage electricity needs very strong insulation to prevent leakage and accidents. For smaller cables (like the ones powering your home), underground insulation is easy and affordable. But for 220 kV or 400 kV lines, the insulation would need to be massive and extremely costly. Towers keep these lines high above the ground, naturally ensuring safety. 2. Heat Dissipation Whenever electricity ...

🌕 What If the Moon Disappeared? | A Mind-Blowing Space Thought 💥 Have you ever wondered what would happen if the Moon just... vanished? It sounds like a sci-fi movie — but let’s dive into the real science of how life on Earth would change without our closest neighbor in space. 🌊 1. No More Tides (Or Very Weak Ones) The Moon controls most of the tides on Earth. Without it, our oceans would be almost still , with only tiny waves caused by the Sun. This would destroy marine ecosystems that depend on tides — goodbye, crabs, sea turtles, and some fish! 🌀 2. Earth Would Start Wobbling The Moon keeps our planet's tilt stable at about 23.5°. Without it, Earth would wobble like a spinning top! Result? Extreme climate changes – deserts could become snowfields, and frozen regions could turn tropical. ⏳ 3. Shorter Days – Literally! Right now, Earth rotates once every 24 hours. But without the Moon slowing us down, our days would become only 6–12 hours long over mi...

  Disadvantages of Using Painkiller Tablets Painkillers are helpful when pain becomes difficult to manage, but using them without care can lead to several problems. Understanding their disadvantages helps you make safer choices and avoid long-term issues. 1. Risk of Dependence Regular use can make your body rely on painkillers. Over time, you may need stronger doses to get the same relief. 2. Stomach Irritation Medicines like ibuprofen, diclofenac and aspirin can irritate the stomach lining. Long-term use may lead to acidity, gastritis or even stomach ulcers. 3. Kidney Problems Frequent use puts pressure on the kidneys. People with kidney disease or dehydration face a higher risk of kidney damage. 4. Liver Damage Paracetamol is safe in small amounts, but high or repeated doses can harm the liver. This is especially risky for people who drink alcohol or already have liver issues. 5. Heart-Related Risks Some painkillers increase the chance of high blood pressure, stroke or heart atta...