How Many Positive Numbers Below 7 Million Contain The Digit 7 And Are Divisible By 7?
Exercise In Logic
3 min readApr 6, 2022
The numbers 7, 70, 77, 147, 175 and 217 are the first six positive numbers which contain the digit 7 and are divisible by 7. How many are there below 7 million? For clarity, let’s not include the number 7 million.
