What is a quantum bit (qubit)?
a) A classical bit that can store a 0 or a 1
b) A basic unit of quantum information that can be 0, 1, or both at the same time
c) A storage unit in a classical computer
d) A unit of time used in quantum algorithms
Answer:
b) A basic unit of quantum information that can be 0, 1, or both at the same time
Explanation:
A qubit is the quantum version of a classical bit, and it can exist in a state of 0, 1, or both (superposition), which is a fundamental property of quantum computing.