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Volume of Spherical Shell

In three-dimensional space, a spherical shell can be constructed from two concentric spheres. Determine the volume of a spheric...

3 months ago

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Calculating Ring Area

In two-dimensional space, a ring can be constructed by using two concentric circles. Determine the area of a ring which has r1 ...

3 months ago

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Number Puzzle - 113

Give an example of a six-digit prime number abcdef for which bcde and cd are also prime numbers.

3 months ago

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Number Puzzle - 107

Let a be an integer and b is equal to a+2. Let c be an integer formed by concatenating a and b. Give examples of two unique a fo...

3 months ago

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Number Puzzle - 094

Give an example of three unique numbers a, b, and c such that concatenating a^2, b^2, and c^2 is equal to d^4 for an integer d.

3 months ago