Question

What is the answer for 3×3

Answer 1

The correct answer to your question is 3x3=9

Answer 2

Assuming that you mean 3 as the decimal representation of the english word "three" ie: $3_{d}$ then you can solve this a couple of ways:

1. By rote memorizarion: 3x3=9
2. As repeated addition: 3+(3+(3)) = 9 
3. Representing it as 3 'groups of' 3:  (ooo)(ooo)(ooo)
4. As a square with sides of length three: 
                                        _ _ _ 
                                       |_|_|_|
                                       |_|_|_|    = 9 squares
                                       |_|_|_| 
5. As "3 squared"  $3^{2} =9$