Count how many times given word x repeats in text.
The phrasing of the Problem Statement is not correct. The string "When you finish ..., you will be told .... You can then .... You can also ...." contains FOUR instances of the WORD "you". "You", "YOU" and "you" are all examples of the _word_ "you". The Problem Statement should say that the player must find occurrences of the provided text-pattern of the same case within the given text.
Make a Palindrome Number
Replace NaNs with the number that appears to its left in the row.
Tell me the slope
Add two numbers
Concatenate two strings
Find the volume of cone
Solve expression I
Select primes from the matrix.
For given vectors x,y find coresponding spline coefficients.
Replace x value into y value in string text.
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