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Quantum entanglement

Quantum entanglement being used by birds to navigate via the earths magnetic field?


Infographic: How quantum entanglement keeps particles linked even when they're separated.

Kaprekar's Constant - 6174

6174 looks pretty straightforward but try this.
Sort it by highest to lowest digit : 7641
Reverse the resulting number : 1467
Subtracting 1467 from 7641 leaves 6174

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