Multiple choice general knowledge math & puzzles If you count from 1 to 100, how many 7's will you pass on the way? 11 10 20 19 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Count all 7s from 1 to 100: Units place (7, 17, 27, 37, 47, 57, 67, 77, 87, 97) = 10. Tens place (70, 71, 72, 73, 74, 75, 76, 77, 78, 79) = 10. Note: 77 contains two 7s and was counted in both sets. Total = 20.