Given a Matrix M, find out the number of elements of matrix that are divisible by 3.
M = [1 2 3;4 5 6;7 8 9];
out = 3
M = [32 12 15; 2 6 45];
out = 4
select the primes of a vector
Is the input divisible by 3?
Cumulative product of a vector
Multiply by 3
Recursion - Fun
Back to Basics - Find no. of elements in a matrix?
Write a function man that takes a row vector v and returns a matrix H as follows..
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