January 2023

Variance in Statistics: Definition, Formulas, Properties, and Examples

The variance is a widely used concept in probability and descriptive statistics for measuring the variability of the given data. The variance is a technique for determining the various terms in finance. It is just the same as the standard deviation but it is measured in squared units. Let us explore the term variance. What …

Variance in Statistics: Definition, Formulas, Properties, and Examples Read More »

संख्या रेखा पर वास्तविक संख्याओं का निरूपण कक्षा 9वीं (Representation of Real Numbers on the Number Line Class 9th)

पिछली कक्षाओं की जानकारी के अनुसार, हम संख्या रेखा पर विभिन्न प्रकार की संख्याओं के निरूपण से परिचित हैं जैसे प्राकृत संख्याओं, पूर्ण संख्याओं, पूर्णांकों और परिमेय संख्याओं के निरूपण से। इस भाग में, हम अपरिमेय संख्याओं सहित संख्या रेखा पर वास्तविक संख्याओं के निरूपण (Representation of Real Numbers on the Number Line) के बारे …

संख्या रेखा पर वास्तविक संख्याओं का निरूपण कक्षा 9वीं (Representation of Real Numbers on the Number Line Class 9th) Read More »

Representation of Real Numbers on the Number Line Class 9th

As per the knowledge of the previous classes, we are familiar with the representation of different types of numbers on the number line like the representation of natural numbers, whole numbers, integers, and rational numbers. In this section, we’ll learn the representation of real numbers on the number line including irrational numbers also. We’ll represent …

Representation of Real Numbers on the Number Line Class 9th Read More »

How can you Understand the Acids, Bases, and Salts?

Many acids and bases occur naturally in nature such as citric acid in fruits like oranges, lemons, etc. The tartaric acid in tamarind, malic acid in apples, etc. The same goes for the bases like lime water, silicate, etc. We normally use many of the acids and bases in our daily life like vinegar, boric …

How can you Understand the Acids, Bases, and Salts? Read More »

वास्तविक संख्याओं का दशमलव प्रसार कक्षा 9वीं (Decimal Expansion of Real Numbers Class 9th)

जैसा कि हम जानते हैं कि सभी परिमेय संख्याओं और अपरिमेय संख्याओं के संग्रह को वास्तविक संख्याएँ कहा जाता है। इस भाग में हम वास्तविक संख्याओं के दशमलव प्रसार (Decimal Expansion of Real Numbers) अर्थात परिमेय संख्याओं और अपरिमेय संख्याओं के दशमलव प्रसार का अध्ययन करेंगे। सबसे पहले, हम परिमेय संख्याओं से प्रारंभ करते हैं। …

वास्तविक संख्याओं का दशमलव प्रसार कक्षा 9वीं (Decimal Expansion of Real Numbers Class 9th) Read More »

Decimal Expansions of Real Numbers Class 9th

As we know that collections of all rational numbers and irrational numbers are known as real numbers. In this section, we shall study decimal expansions of real numbers means decimal expansions of rational numbers and irrational numbers. First, we start with rational numbers. Decimal Expansions of Rational Numbers Rational numbers are in the form of …

Decimal Expansions of Real Numbers Class 9th Read More »