# The real brainteaser!

Level pending

'ERNIE' is a random number producer.

• $$pi$$ could also be said to be a random number producer, because the decimal equivalent is known to only 2000 million decimal places.

• i.e. Nobody knows the million millionth decimal place, each digit has the same chance to be the one.
• So, if you had a transcendental number which consists of random digits, what would be the average difference two random digits side by side?

It should be $$\frac{0 + 9}{2}$$ = 4.5

BUT IT ISN'T. What is it then?

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