【简答题】Your sock drawer contains ten pairs of white socks and ten pairs of black socks. If you’re only allowed to take one sock from the drawer at a time and you can’t see the color of the sock you’re taking...
【单选题】Of 60 pairs of socks in a drawer, 40% are blue, while the remaining socks are all gray. If 4 blue socks are removed from the drawer, what is the ratio of gray socks to blue socks?