An intelligence quotient (IQ) is a total score derived from several standardized tests designed to assess human intelligence. The abbreviation IQ was coined by the psychologist William Sterne for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in a 1912 book.
Answer: Ronald Reagan became the oldest president when he was elected in 1980 at the age of 69.
Tuesday is Donald Trump's 70th birthday. If he wins the election in November, that means he would be the oldest newly elected president in U.S. history, putting him ahead of Ronald Reagan, who was just shy of 70 on Inauguration Day 1981. If Hillary Clinton were elected, she wouldn't be far behind. She will turn 69 in October. Come Inauguration Day 2017, that would put her not far behind Reagan when he was inaugurated, making her the second-oldest president.