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JEE 2020 QUESTION

 Question = Set A has m element and set B  has n element. If the total number of a subset of A is 112                                     more than the number of subsets of B, then find the value of m.n  solution= 

Concept of number systems

  CONCEPT     MAP The concept of number systems is the foundation of mathematics and is essential to our daily lives. A number system is a set of symbols and rules that represent numbers and their operations. Here are some key takeaways about number systems: The most commonly used number system is the decimal system, which uses 10 digits (0-9) and is based on powers of 10. Each digit in a number represents a specific value based on its position. Other common number systems include binary (base-2), octal (base-8), and hexadecimal (base-16). These number systems are used in computer science and digital electronics. In a base-n number system, where n is an integer greater than 1, the digits used are 0 through n-1. Each digit in a number represents a specific value based on its position, which is a power of n. Number systems can be converted from one base to another using algorithms such as long division or repeated division by the base. For example, converting a decimal numb...

mattter

                                                          matter   matter  =  matter  is anything that has mass, space and precieced by sense . ex = pen ,book iron etc    states of matter = water, liquid. gqs    

what isHYDROGEN ?

HYDROGEN : Hydrogen is the lightest and most abundant element in the universe. Here are some important notes on hydrogen: Chemical symbol and atomic number: Hydrogen is represented by the chemical symbol H and has an atomic number of 1. This means it has one proton in its nucleus and one electron in its electron cloud. Properties: Hydrogen is a colorless, odorless, and tasteless gas. It is highly flammable and can burn in the air or in the presence of oxygen to produce water vapor. Occurrence: Hydrogen is the most abundant element in the universe, making up about 75% of its elemental mass. It is found in stars, gas giant planets, and other celestial bodies. Isotopes: Hydrogen has three naturally occurring isotopes: protium, deuterium, and tritium. Protium is the most common, making up about 99.98% of all hydrogen atoms. Deuterium and tritium are heavier and are used in nuclear reactions. Uses: Hydrogen has a wide range of applications, including in the production of ammonia for fertili...