Calculate the mean of corner elements of a matrix.
e.g. a=[1 2 3;
4 5 6;
7 8 9;]
Mean = (1+3+7+9)/4 = 5
Number of 1s in a binary string
Duplicate each element of a vector.
Find out missing number from a vector of 9 elements
Area of an equilateral triangle
Who is the baby and who is the daddy in this family?
Find my birthday
Find supported functions
Sum of diagonals elements of a matrix
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