Quantum Computing Superposition
Your assumptions are wrong, and I suggest picking up a textbook on quantum computing.

The state of $n$ qubits can be described by $2^n$ complex numbers $\varphi_x$ whose squared magnitudes sum to 1. You can think of these $2^n$ complex numbers as indexed by $\{0,1\}^n$. When you "read" the $i$th qubit (the technical term is "measure"), what happens is that with probability $p_b := \sum_{x\colon x_i=b} |\varphi_x|^2$ you see the value $b$. Moreover, from now on the value of this qubit will always be $b$ (unless you apply quantum operations to it). The rest of the state is updated accordingly: $\varphi_x := 0$ if $x_i \neq b$ and $\varphi_x := \varphi_x/\sqrt{p_b}$ if $x_i = b$.