Problem asks for palindromes starting at 1, but test cases start at 100.
Now it goes down to 10, but wouldn't single digits be considered palindromes as well?
Additional test cases were added and the description slightly enhanced.
How many trades represent all the profit?
sum of non-primes
03 - Matrix Variables 4
construct matrix with identical rows
Concatenate two strings
Find the area of the four walls
Convert a number to its Roman representation
Find the square of the sum of the digits of a number
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