If the two tables are inner joined, what will be the output?

Question

Table A: 1 1 1 2 2 3 3 3 4 4  
Table B: 1 1 2 2 3 3 5 5 5

What will be the output if the two tables are inner joined?

My answer was 1 1 2 2 3 3 but the interviewer said it wrong :/

According to my knowledge, inner join means the common factors of two tables. What should be my approach to this question?

Answer 1

Answer will be :

1
1
1
1
1
1
2
2
2
2
3
3
3
3
3
3

db<>fiddle demo

Let me explain for 1: There are three rows containing 1 in TableA and two rows with 1 in TableB, so the final output will have 3*2 = six 1. Similarly for the other values.