TO INFINITY AND BEYOND

                                                                 DIVISIBILITY RULES   Divisibility rules or Divisibility tests  have been mentioned to make the division procedure easier and quicker. If students learn the division rules in Maths or the divisibility tests for 1 to 20, they can solve the problems in a better way. Divisibility Rule of 1 Every number is divisible by 1. Divisibility rule for 1 doesn’t have any condition. Any number divided by 1 will give the number itself, irrespective of how large the number is. For example, 3 is divisible by 1 and 3000 is also divisible by 1 completely. Divisibility Rule of 2 If a number is even or a number whose last digit is an even number i.e.  2,4,6,8 including 0, it is always completely divisible by 2. Example:  508 is an even number and is divisible by 2 but 509 is not an even number, hence it is not divisible by 2. Procedure to check whether 508 is divisible by 2 or not is as follows: Consider the number 508 Just take the last digit

  Six Is the Smallest Perfect Number In number theory, a perfect number is a positive integer that is equal to the sum of its positive divisors. By this rule, six is the  smallest perfect number . If you scratched your head and said, "Huh?," here's an example to clarify: 1 + 2 + 3 = 6. The next perfect number doesn't occur until 28. It turns out perfection really  is  few and far between…

                                                                                                                                                                                 Square a two digit number ending in 5  When a number or integer (not a fraction) is multiplied by itself, the resultant is called a  ‘Square Number’ . For example, 3 multiplied by 3 is equal to 3-squared or 3 x 3 = 3 2 . So, basically, the exponential form of multiplication of a number or integer by itself is called a square number. 

  Take Any Number And Multiply It by Three For a Cool Trick Take any number, and multiply it by  three . Then, take the digits of that new number and add them all together. Whatever number that equals will always be divisible by three, no matter what number you started with.  For example: 3 x 4 = 12 1 + 2 = 3 3 / 3 = 1