# “The Knowledge Library”

Knowledge for All, without Barriers…

# “The Knowledge Library”

Knowledge for All, without Barriers……….

## The Knowledge Library

### How to Calculate Age

हम आपको Age (आयु) का हिसाब लगाने के तरीके को 3 उदाहरण के माध्यम से समझायेंगे। आसानी से समझने के लिए नीचे दिया गया वीडियो भी देख

### How do Sine, Cosine, and Tangent Work?

What are sine, cosine, and tangent? They’re three of the main functions in trigonometry. You may have heard about them already in math class. Trigonometry is connected to geometry and other branches of math. It

### Who Was Shakuntala Devi?

What’s 2 ✕ 2? If you said four, you’re right! How about 10 ✕ 10? Yes, 100! Now for a harder one: What is 7,686,369,774,870

### Who Invented Math?

Mathematics encompasses many different types of studies, so its discovery can’t even be attributed to one person. Instead, mathematics developed slowly over thousands of years with the help of thousands

### How Does a Calculator Work?

Today, calculators are everywhere. Many kids probably take them for granted. After all, any smartphone will have a calculator application right there on the home screen. You can also

### Googol

What’s the biggest number you can think of? A million? A billion? A trillion? A gazillion? Infinity? Long ago, mathematicians came up with an easy way

### What Is Pi?

The circumference of a circle is its perimeter or the length around it. The distance from the center of a circle to its edge is the radius. The distance from

### How Many Is a Googol?

What’s the biggest number you can think of? A million? A billion? A trillion? A gazillion? Infinity? Long ago, mathematicians came up with an easy way

### What Is Infinity?

The idea of infinity is used mainly in the fields of math and physics. It describes a quantity without end. In fact, infinity comes from the

### इकाई दहाई सैकड़ा हजार की गिनती चार्ट | Historic numbering systems in Hindi

इकाई One 1 दहाई Ten 10 सैंकड़ा Hundred 100 हज़ार One Thousand 1000 दस हज़ार Ten Thousand 10000 लाख Hundred Thousand 1,00,000 दस लाख One

### Hindi English Ordinal and Roman Numbers/Counting

ENGLISH NUMBER SYMBOLS HINDI NUMBERS हिंदी गिनती ENGLISH NUMBERS क्रमसूचक संख्या ORDINAL NUMBERS ORDINAL NUMBERS FULL FORM ROMAN NUMERALS 0 ० शून्य Zero 0 0

### Mathematics Formulas

(α+в)²= α²+2αв+в² (α+в)²= (α-в)²+4αв (α-в)²= α²-2αв+в² (α-в)²= (α+в)²-4αв α² + в²= (α+в)² – 2αв. α² + в²= (α-в)² + 2αв. α²-в² =(α + в)(α –

### Mathematical Terms in Hindi

1)  +   =  जोड़ 2)  —  =  घटाव 3)  ×  =  गुणा 4)  ÷   =  भाग 5)  %  =  प्रतिशत 6)  ∵   =    चूंकि 7)

### Mathematics Formula – Algebra & Mensuration

Mathematics Formula – Algebra & Mensuration Algebra (a+b)2 = a2 + 2ab + b2 (a – b)2 = a2 – 2ab + b2 a2 + b2 = (a+b)2 – 2ab = (a