Find the number of points (x,y) in square lattice with x^2 + y^2 =< n. This is related to Jame's Problem 1387. Here you have to find the number of points within a circle.
give nth decimal place of pi
Energy of a photon
System of equations
Are all the three given point in the same line?
Determine if input is a perfect number
Celsius to Kelvin
Celsius to Fahrenheit converter
Number of vertices of a hypercube
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