Number 2

Yesterday I came across with another interesting property of the number 2. I thought of sharing it.
The problem is to express all ten digits , in each case using the number 2 five times and no other number. You are allowed to use the symbols for addition, subtraction, multiplication and division and the conventional method of writing fractions.

Here is the answer :
2 + 2 - 2 - 2/2 = 1
2 +2 +2 +-2 - 2 = 2
2 +2 - 2 +2/2 = 3
2 x 2 x 2 - 2-2 = 4
2 +2 + 2-2/2 = 5
2 +2 +2 + 2-2 = 6

22÷2 -2 -2 = 7

2 x 2 x 2+ 2/2 = 9

2-2/2-2/2 = 0

 another interesting  thing 

  123456789
+123456789
+987654321
+987654321  
+                2
--------------
2222222222

a video worth watching

Number One

Cute Little Two

Today I thought of writing about the wonderful number, Number Two.

It's a very special number for me as I am the second child of my parents and I have two sons. Most interestingly the month in which I was born is February and that's the second month of the year.

2 is the only even prime number. Prime numbers are natural numbers which have got exactly 2 factors ; one and the number itself.

The whole set of integers is divided into two groups known as even numbers and odd numbers. A number is called as an even number if it is divisible by 2, otherwise it is an odd number. 

Here are some interesting facts

2⁷ = 71² - 17³

2 + 2 = 2 x 2 = 2²

2= 3³ - 5²

2= 4² - 3² - 2² - 1²

In India every month  we all look forward for Second Saturdays. Its a holiday.Saturday is named after Saturn.  Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. That may be the reason we get a Holiday on Second Saturday !

Natural numbers

If you start observing the numbers , you can find many amazing and interesting facts about them. Some of them are simply beautiful. There are different types of numbers i.e. positive, negative, prime, composite, rational, irrational etc. Here I am concentrating on the Natural numbers.

Natural Numbers are numbers used for normal counting.  When we have to count some objects we naturally start with 1, 2, 3 and carry on. That may be the reason these numbers are called Natural Numbers !  The set of numbers { 1,2,3,.....} is called the set of Natural numbers. When we use the term’ Set’ in Mathematics it means a collection of well defined objects.(  For example the collection of all good singers in a town can not be considered as a set because the term ‘good singers' is not well defined.  A person can be a good singer according to you but not according to your friend. )

The set of Natural Numbers is denoted by the English alphabet  N.

Most interestingly it is an infinite set i.e a never ending set. Therefore you cannot find the biggest natural number. Whichever number you take, simply add one to it and you get a bigger number than the first one. So it is a very large family of numbers. And the junior most member is the little cute number  1.

One is a very special number. It is known as the multiplicative identity or the identity element for multiplication. i.e if you multiply any number with one you get the same number as the answer. No other natural number possesses this quality. Therefore Number 1 is special.

One feels happy when he become first in a race or get the first prize in a competition. So you can feel the importance of the little number 1. 

This Bible verse comes to my mind 

"And whoever exalts himself shall be humbled; and whoever humbles himself shall be exalted.” Matthew 23:12

Number 1 has humbled itself and see how it is being exalted !

Another interesting fact about number 1 is that it is neither prime nor composite. It is the only natural number which has this speciality.

If you divide any number by number 1 you get the number itself. Most interestingly  you have to add 1 to any natural number to get the next natural number.

Isn’t it interesting ? 

Amazing Nine

The sum of the angles of a triangle is 180degrees.

1+8+0= 9

NINE IS MINE

 Another interesting Fact

There are 360 degrees in a circle.

 3 + 6 + 0 = 9.