Parents of Arjun Prajapati, an Indian-origin child living in Canada who scored Full Scale IQ of 141 on Stanford-Binet intelligence test at age four, said he began reading at 18 months and has explored 3,000+ books. His interests range from STEM to ancient civilisations. Arjun's IQ placed him in the 99.7th percentile and qualified him for two international high-IQ societies.