An electron is trapped in a one-dimensional infinite potential well that is $100 \mathrm{pm}$ wide; the electron is in its ground state. What is the probability that you can detect the electron in an interval of width $\Delta x=5.0 \mathrm{pm}$ centered at $x=($ a) 25 $\mathrm{pm}$, (b) $50 \mathrm{pm}$, and $(\mathrm{c}) 90 \mathrm{pm} ?$ (Hint: The interval $\Delta x$ is so narrow that you can take the probability density to be constant within it.)