What is the most used letter in the English alphabet?
An analysis of the frequency of the letters occurring in the main entries in the "Concise Oxford Dictionary" found that the letter E occurred in 11.2 percent of the words, making it the most commonly used letter. The letter A came in second by appearing in 8.5 percent of the words. The least occurring letters were X (0.29 percent), Z (0.27 percent) and J (0.2 percent), with Q coming in last with 0.19 percent. Source: En.OxfordDictionaries.com