How many times does 4 occur between 10 and 100?

Answer 1

The symbol "4" occurs 19 (note the 44 is twice) times in the counting sequence between 10 and 100 as is demonstrated below.

1. 14
2. 24
3. 34
4. 40
5. 41
6. 42
7. 43
8. 44
9. 45
10. 46
11. 47
12. 48
13. 49
14. 54
15. 64
16. 74
17. 84
18. 94