Clever cheat-prevention strategy!
Find relatively common elements in matrix rows
Make one big string out of two smaller strings
letter yes yes & letter no no
Change the sign of even index entries of the reversed vector
Volume of a sphere given its surface area
Find all the zeros of sinus , cosinus and tangent in a given interval
Join Strings with Multiple Different Delimiters
Set the array elements whose value is 13 to 0
Multiply 2 numbers
Find the list of all open files
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