Solution

40108

First name
Vishal
School
Ryvers
Age
10

This question is about Trial and Error. I worked it out by trying it 27 times.

Here are my answers:

Largest odd number: 8765
Largest even number: 5786
Largest multiple of 3: 9933
Smallest multiple of 5: 5
Closest number to 5000: 4422

That is my opinion.