Multiple choice
For qubit 0 after this circuit, what is ⟨X⟩, the X-axis projection of its Bloch vector?
// cos(θ/2) = √3/2 → θ/2 = π/6 → θ = π/3 const c = circuit(1); c.ry(Math.PI / 3, 0); return c;
Commit your prediction for ⟨X⟩ of qubit 0 — then run it.