given a matrix, just find the mean of all elements in the matrix
easy problem just try
Back to basics 11 - Max Integer
Back to basics 14 - Keywords
Implement simple rotation cypher
Find the area of the four walls
Matlab Basics II - Intervals
Find the last digit
Find remainder when x is divided by 3
Determine whether the input is divisible by 3 as well as 5
find a specific element from an matrix
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