Missing Number Puzzle – 1,20,?,266,675 (4 votes, average: 2.25 out of 5)January 30, 2017 by puzzler Leave a Comment Number Puzzle #167 1,20,?,266,675 What’s the missing number? Share on Whatsapp Share on Facebook Share on Twitter Facebook Comments Next Puzzle Number Puzzle #168 – If 1 + 2 = 13 Then