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Given an Icosahedron and its 12 Vertices. Find the intersecting volume of 10 cylinders of radius 1. Each cylinders centerline passes through the centroid of two faces(opposite faces). You ...

Find the number of unordered triplets of boolean operations (AND, OR, XOR, XNOR, NOR, NAND, IMP, and IMPBY) that are sufficient to uniquely determine the values of two ordered bits.

This question is the generalisation of the optimal solution for this problem.

To rereiterate: you live on a 100 floor building, and want to find the lowest floor at which ...

"Ascending Number" is a positive integer that the $n+1$th digit is always same or larger than the $n$th digit. (In $5680$, the $1$st digit is ...

Sam and Linda are taking a sleigh ride in a snowy forest. After taking a frolic in the fresh winter snow, they decide that they should head back. Unfortunately for ...

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