Question

which two numbers add up to 6 and multiply into36

Answer 1

I think 2 and 3. Three times two equals six and you can multiply 2 and 3 into 36.

Answer 2

There are many possibilities.
1 times 36 = 36
2 times 18 = 36
3 times 12 = 36
4 times 9 = 36
6 times 6 = 36

I hope this helped.