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  Divisibility Rules   1. Divisibility by 2 A number is divisible by 2 if it has any of the digits in one’s place 0,2,4,6,8    Ex. 654/2 = 327 2. Divisibility by 3 If the sum of the digits of a number is a multiple of 3, then that number is divisible by “3”   Ex 1) 24 = 2+4= 6 is divisible by 3       2) 129 = 1+2+9 = 12 = 1+2 = 3 divisible by 3       3) 12345 = 1+2+3+4+5 = 15 = 1+5= 6 is divisible by 3 3. Divisibility by 4 A number with 3 or more digits is divisible by 4. If the number formed by its last two digits (ones, tens) is divisible by 4. And also, 0 in both places.   Ex. 312 &1312 both have 12 in at last two digits which is divisible by '4' 4. Divisibility by 5 The number with 0 and 5 in one’s place is divisible by 5   Ex. 750/5 = 150  5. Divisibility by 6 .  If the number is divisible by both 2 and is divisible by 6 too.   Ex.  8430 is divisible by 2 and ...

  What are numbers? Numbers are symbols that are used to represent a quantity or amount. In mathematics, numbers are used to represent a wide range of concepts, including quantities, measurements, and relationships between quantities. Numbers can be classified into different types, including natural numbers (1, 2, 3, etc.), whole numbers (0, 1, 2, 3, etc.), integers (-3, -2, -1, 0, 1, 2, 3, etc.), rational numbers (fractions), and irrational numbers (numbers that cannot be expressed as a fraction). Numbers can be represented using different systems, such as the decimal system (base 10) and the binary system (base 2). Numbers play a central role in many areas of science, engineering, and other fields, and they are an essential tool for understanding and describing the world around us. History of numbers: Numbers have been used by humans for thousands of years to represent quantities and perform calculations. The concept of numbers and how they are used has evolved over time...