Angle between Two Vectors
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
sum of non-primes
Find the dimensions of a matrix
MATCH THE STRINGS (2 CHAR) very easy
given 4x4 matrix swap the two middle columns
match 2 string
give-nth-decimal-place-of-pi up to 100 digits
kmph to mps
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