| [ QuizWit ] in KIDS 글 쓴 이(By): dalgong (달공아저씨) 날 짜 (Date): 2007년 9월 20일 목요일 오후 03시 45분 30초 제 목(Title): 1 to 999,999,999 "If the integers from 1 to 999,999,999 are written as words, sorted alphabetically, and concatenated, what is the 51 billionth letter?" To be precise: if the integers from 1 to 999,999,999 are expressed in words (omitting spaces, 'and', and punctuation[1]), and sorted alphabetically so that the first six integers are * eight * eighteen * eighteenmillion * eighteenmillioneight * eighteenmillioneighteen * eighteenmillioneighteenthousand and the last is * twothousandtwohundredtwo then reading top to bottom, left to right, the 28th letter completes the spelling of the integer "eighteenmillion". The 51 billionth letter also completes the spelling of an integer. Which one, and what is the sum of all the integers to that point? [1] For example, 911,610,034 is written "ninehundredelevenmillionsixhundredtenthousandthirtyfour"; 500,000,000 is written "fivehundredmillion"; 1,709 is written "onethousandsevenhundrednine". |