Duplicate all elements in the array
The solution to this problem doesn't make any sense!!!
If you are using the word "duplicate" to mean multiply by 2, then the correct answer is [2,4,6], not [1,4,6]
Find the alphabetic word product
Remove NaN ?
Generate a NaN...on purpose
Convert from Fahrenheit to Celsius
Convert characters into numbers
Calculate the square root of a number
Find the max element of the array
calculate the length of matrix
Calculate the average value of the elements in the array
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