An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. For example, 153 is an Armstrong number since 1^3 + 5^3 + 3^3 = 153.
Generate a vector like 1,2,2,3,3,3,4,4,4,4
subtract central cross
03 - Matrix Variables 4
kmph to mps
give-nth-decimal-place-of-pi up to 100 digits
Given a 4x4 matrix, swap the two middle columns
Basics: 'Find the eigenvalues of given matrix
Who invented zero?
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