Make a square matrix with this shape. For n=4
1 1 0 0
1 0 1 0
0 1 0 1
0 0 1 1
Remove all the words that end with "ain"
Back to basics 10 - Max Float
Getting logical indexes
Determine if input is a perfect number
Largest Twin Primes
Altitude of locations on the earth
Derivative of polynomial
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