cool solution !!!!
Similar Triangles - find the height of the tree
Whether the input is vector?
MATCH THE STRINGS (2 CHAR) very easy
Replace values under a limit
Divisible by 5
Add 3 (x<=100) Or Subtract 100 and add 3(100<x)
Please check the last row
The average of the second largest values
Friday or not
The proportion of NaN in the data
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