The next number in the sequence 9, 3, 1, 1 is 13\frac{1}{3}31. Explanation:
- The sequence divides each term by 3 to get the next term.
- 9÷3=39\div 3=39÷3=3
- 3÷3=13\div 3=13÷3=1
- 1÷3=131\div 3=\frac{1}{3}1÷3=31
Therefore, the next number after 1 is 13\frac{1}{3}31.
