You can find anyone on making a simple calculation.

I know mambo-jambo sounds a mathematical, but this trick really works. Here's what to do.

Ask a friend or colleague month to think about where he was born. If he was born in January, the first month will be February is the second month, and so on. Ask him then multiply that number by 5. Then add 6. Multiply the result by 4. Add 9. Increase once the result by 5. Finally, ask him to add the day she was born. For example, 25. Ask them result in total extract and 165. The result should be followed by the birthday month of the friend.

Here is how does the trick. Imagine that L is the number of, and Z is the birthday. The equation will look like this: 5 (4 (5L + 6) + 9) + Z = 100L + Z + 165. When you subtract 165, the result is the birth date of the person, which is the month followed by the day.

In a group of 23 people, the chances that at least two people have the same birthday is greater than ½;

As the world people, in the world of mathematics exist irrational numbers, perfect numbers and complex numbers. Further, as in philosophy, and transcendental numbers and math there, like art, mathematics is also has its imaginary numbers and surreal.