Answer: 1/9
Step-by-step explanation:
First pick and Second pick
[tex]\dfrac{5\ \text{white socks}}{16\ \text{total socks}}\times \dfrac{4\ \text{remaining white socks}}{15\ \text{total remaining socks}}=\dfrac{20}{180}\rightarrow \large\boxed{\dfrac{1}{9}}[/tex]