Question $1($Mandatory$)(10$ points$)$

In a two$-$step process with yields of $0\mathrm{.}20$ in step $1$ and $0\mathrm{.}30$ in step $2,$ to get $100$ good units, we should start the process with approximately how many units? Assume a stable process.

a$)$ Process Yield $($reliability$)=$ multiplicative yield of all steps in a process.

b$)$ Yield $($reliability$)=$ # good units $/$ # of start units

Question $1$ options:

$100$ units

$2490$ units

$1667$ units

$3334$ units