Input(n) is positive integer number
Output(r) is (number of "1" in binary input) / (number of bits).
Determine Whether an array is empty
CONVERT TAN TO SIN
Is it a number?
Rounding off numbers to n decimals
Mean and standard deviation of times in string
Vector of numbers divisible by 3
Volume and area of a sphere
Create matrix with Gray code
Return area of square
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