We love vectorized solutions. Problem 1 : remove the row average.
Find the Area of a Polygon
Sum of all the divisors of n
Find pairs of primes with the same digit sum
Count numbers whose reciprocals' decimal expansions terminate
Easy Sequences 15: Pythagorean Area with maximum Hypotenuse
Easy Sequences 47: Boxes with Prime Edges
Easy Sequences 45: Second Derivative of Inverse Polynomial Function
Easy Sequences 44: Finding the Smallest Number whose Cube is divisible by a Factorial
Easy Sequences 2: Trigonometric function with integral input and output
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