Mary prompt 1 and 2

I just got in this blog, it finally worked, so I hope I'll get credit for both the prompts...

Prompt 1

I think number theory is maybe, how numbers came to be perhaps? Or a theory on how to work any and every type of problem? I really have no idea. Some secret sequences for working big problems that no one else knows about? So, I guess I'll find out soon.

Prompt 2

1 : 1
2 : 3
3 : 6
4 : 10
5 : 15
6 : 21
7 : 28
8 : 36
9 : 45
10 : 55

B) pattern? what do i look like? i have no clue. haha, i don't know if this counts for anything, but if you look at the diagonal numbers and add them...they give you the number on the right. but that still means you would have to write this out for a huge number which probably wouldn't help...

C) David sitting right over here, told me that there is a formula, but I don't know what it is.

D) So I know there is a formula; how would i prove that is it correct? you could type it in your calculator, then use the formula to check yourself i guess..
byebye.