It has nothing to do with luck. Remember that these are pseudo-random numbers.
Yep. More luck than brains here. You really have to get lucky to have this one work. Roughly 1/216 th probability.
You're right Peter... and I've been kind of lucky this time :)
Extract leading non-zero digit
Find common elements in matrix rows
Back to basics 19 - character types
Sum the entries of each column of a matrix which satisfy a logical condition.
Test if two numbers have the same digits
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