The Sock Drawer Probabilities, likelihoods, odds ratios, etc. All of these things are important when deciding on public health and medical interventions. In light of this, we present you with our first probability puzzler.
You have a sock drawer with red socks and white socks. You want the probability of drawing two red socks, in the dark, to be 1/2. What is the minimum number of white and red socks in the drawer such that the probability is 0.50?