Mislav Predavec is a Croatian math professor who has an IQ of 192. For context, only 1 in a billion will have an IQ over 190. According to Mislav, “very difficult intelligence tests are my favorite hobby.” However, his wife Marijana explains that they are just an “ordinary couple,” and there are still things her hyper intelligent husband finds difficult. “When we buy a mobile phone, I am the one that puts it together and puts the SIM card in,” she’s stated.