I'm getting different answers.. can u give a more clear explanation?
Determine if a Given Number is a Triangle Number
Right and wrong
Reverse the elements of an array
Mysterious digits operation (easy)
Sums of cubes and squares of sums
The last non-zero digit of a factorial
Under the sea: Snell's law & total internal reflection
Equal temperament - musical notes and frequency
The number of trailing zero digit of a factorial
Number of paths on a n-dimensional grid
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