Solve : Cool Math Trick. How??

1.	Solve : Cool Math Trick. How??
Answer» The Cool Math TRICK was posted some time ago. Does anybody understand how this works? Warning V- ideo. http://www.youtube.com/watch?v=AtKg9XhjVjw&feature=related Somehow I thought that when you divide a large number by three small prime numbers, the answer WOULD not be even be close to division by some other small prime numbers. What is the trick? erm..........the first comment under the video Quote This is because the product of 7, 11 and 13 makes 1001. Any number presented in the way described in the video can be divided by 1001. If we do the calculation backwards, and start with any number, such as 673, you multiply it by 1, then 1000, then add them TOGETHER. No matter what 3 digit number you start with, it will always repeat itself when multiplied by this number. This is because any 3 digit number timesd by 1000 will equal that number followed by 3 0's. These are where the times 1 goes. Thank you. Now I get it.

Answer»

The Cool Math TRICK was posted some time ago.
Does anybody understand how this works? Warning V- ideo.
http://www.youtube.com/watch?v=AtKg9XhjVjw&feature=related
Somehow I thought that when you divide a large number by three small prime numbers, the answer WOULD not be even be close to division by some other small prime numbers. What is the trick?

erm..........the first comment under the video
Quote

This is because the product of 7, 11 and 13 makes 1001. Any number presented in the way described in the video can be divided by 1001. If we do the calculation backwards, and start with any number, such as 673, you multiply it by 1, then 1000, then add them TOGETHER. No matter what 3 digit number you start with, it will always repeat itself when multiplied by this number. This is because any 3 digit number timesd by 1000 will equal that number followed by 3 0's. These are where the times 1 goes.

Thank you. Now I get it.

Solve : Cool Math Trick. How??

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment