Question

There r 9 cities numbered 1 to 9.from how many cities the flight can start so as to reach the city 8 either directly or indirectly such the path formed is divisible by 3.

Answer 1

Thank you for asking this question.

The answer to this question should be 8.

A number started by 1 as 1368

2 as 2358

3 as 3168

4 as 4158

5 as 5418

6 as 6138

7 as 7218

9 as 9138.

Looking at all these options we can start from any city we want.

Please leave a comment below if there is any confusion.