Count number of words in string
'hi', answer is 1
'hi hi', answer is 2
'I enjoy cody', answer is 3
Angle between two vectors
Scoring for oriented dominoes
Add two numbers
Try 1.5.4: Celsius to Fahrenheit
Deleting an element in a matrix
Find out total non zero element of matrix
Append two matrix as shown below example
Find out base of following arithmetic operation
Find out characteristics equation of given matrix.
Add one raw in given matrix as shown in example
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