A little warm-up to begin...
An n-digit number is pandigital if it makes use of all the digits 1 to n exactly ONCE.
For example, the 5-digit number 15234, is 1 through 5 pandigital.
Given a positive integer find whether it is a pandigital number.
How long is the longest prime diagonal?
Solving Quadratic Equations (Version 1)
BLOCK x3 (Version 3)
Find my secret number
Negation and new variables
Without the French accent please!
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