RB_CH01_Q059. Heterosexual intercourse without condoms

(**) I am told this is a genuine finance interview question. It had to be a trading position, because no one but a trader would ask this in an interview. I considered transforming the question, but left it as is for authenticity. Avert your eyes if you are easily offended! How can three men and one woman have mutually safe heterosexual intercourse with just two condoms? Assume that no condom can break or leak, and that you cannot wash a used one.