In a right angle triangle ABC given the tan(A) then find sin(A)
For example tan(A)=3/4 then sin(A)=3/5
The Goldbach Conjecture, Part 2
Generate pi using logarithm
What number has this problem?
Given a 4x4 matrix, swap the two middle columns
Is it an Armstrong number?
Who invented zero?
Equal to their cube
give-nth-decimal-place-of-pi up to 100 digits
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