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Which property of quantum bits (qubits) allows them to exist in multiple states simultaneously?
- Entanglement
- Superposition
- Interference
- Decoherence
Answer: Superposition
Superposition enables qubits to represent both 0 and 1 simultaneously, unlike classical bits. This parallelism allows quantum computers to process vast solution spaces exponentially faster for specific problems like factoring, optimization, and simulation. Entanglement correlates qubit states; interference amplifies correct answers; decoherence is error from environmental noise.