An 11-year-old Indian-origin boy in the UK has secured the top possible score of 162 on a Mensa IQ test, two points higher than geniuses Albert Einstein and Stephen Hawking, making him one of the brainiest children in the country. <br/><br/>Arnav Sharma, from Reading town in southern England, passed the infamously difficult test. His mark in the exam, which primarily measures verbal reasoning ability, puts him in the top one per cent of the nation in terms of IQ level. Mensa, founded in 1946 in Oxford, is believed to be the largest and oldest high IQ society in the world.