The title and description of this problem have been cleaned up. Also, its test suite has been expanded and improved.
Determine if a Given Number is a Triangle Number
Convert from Base 10 to base 5
Flip the bit
Sum of series VI
Find out magnitude of vector
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
Sum positive elements of matrix.
Calculate roots of polynomial given as vector array.
Find the volume of cone
Find the sides of an isosceles triangle when given its area and height from its base to apex
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