Change given string to number. (hint: there is already function)
Changing from ['1234'] to  is one of example
Please expand the test suite so that solutions like this do not work.
Back to basics 7 - Equal NaNs
Who has power to do everything in this world?
Perfect Square or not
prime test 2
Your favourite city!
Calculate area of sector
Two dimensional moving average
Solve equation numerically
Interpolate scattered data.
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