make all the elements in given x zero.
Simple but fun
I'm not sure this would work if there is a 0 in x...
Make a Palindrome Number
Check if sorted
Back to basics 25 - Valid variable names
sum of first 'n' terms
Help the Patriots get to the Super Bowl
find the 'M'
Replace all odd numbers with NaN
true or false
Make an identity matrix whose diagonal elements are 1:n
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