### Post by robeiae on Mar 20, 2017 8:16:19 GMT -5

www.realclearscience.com/articles/2017/03/20/pi_is_full_of_hidden_patterns_110219.html

Sounds weird, no?

Check this:

If Pi is normal, then somewhere in it we might expect to find this sequence, as well:

01234567891011121314151617181920

Or even this one:

71077345

And this is fun: pi search page

You can check to see where your birthday appears in pi. Mine appears at 79218091 (month, day, 4-digit year).

My second example above occurs at 24625341. My first example isn't in the first 200 million digits, apparently.

My oldest child's birthday occurs 4 times, my middle child's 3 times, my youngest child's only 2 times.

The reason we can’t call pi random is because the digits it comprises are precisely determined and fixed. For example, the second decimal place in pi is always 4. So you can’t ask what the probability would be of a different number taking this position. It isn’t randomly positioned.

But we can ask the related question: “Is pi a normal number?” A decimal number is said to be normal when every sequence of possible digits is equally likely to appear in it, making the numbers look random even if they technically aren’t. By looking at the digits of pi and applying statistical tests you can try to determine if it is normal. From the tests performed so far, it is still an open question whether pi is normal or not.

But we can ask the related question: “Is pi a normal number?” A decimal number is said to be normal when every sequence of possible digits is equally likely to appear in it, making the numbers look random even if they technically aren’t. By looking at the digits of pi and applying statistical tests you can try to determine if it is normal. From the tests performed so far, it is still an open question whether pi is normal or not.

Check this:

Other interesting sequences of digits have also been found. At position 17,387,594,880 you find the sequence 0123456789, and surprisingly earlier at position 60 you find these ten digits in a scrambled order.

01234567891011121314151617181920

Or even this one:

71077345

And this is fun: pi search page

You can check to see where your birthday appears in pi. Mine appears at 79218091 (month, day, 4-digit year).

My second example above occurs at 24625341. My first example isn't in the first 200 million digits, apparently.

My oldest child's birthday occurs 4 times, my middle child's 3 times, my youngest child's only 2 times.