Damn... Here I am, in front of my examination paper, and my calculator is failing me! I can do some calculation, but for some additions, I don't get the good result! (I think my roommate purposefully changed something last night, as it was my turn to do the dishes and I, err, forgot to do it...)
Here are some calculations I just did :
18 + 34 + 28 + 6 = 33
27 + 15 + 15 + 68 = 29
22 + 7 = 50
Can you find what's going on with my calculator?
Edit/Hint : Wow, I just noticed something very strange :
28 + 34 + 6 + 18 = 86
15 + 27 + 15 + 68 = 125 and 68 + 27 + 15 + 15 = 125
7 + 22 = 29
All I did was the same calculation in another order, so I guess it might be important...
I also noticed that :
85 = 33 + 73 + 22 + 10
Hint 2: Just stumbled across other additions giving a wrong number :
47 = 14 + 116 + 68
6 = 20 + 37 + 8 + 7
Hey, listen, I have another one which is not making sense to me! But maybe it will help you...
54 = 54 + 7 + 8 + 7
54 = 54 + 102 + 7
Ok, time for the major hint before a bounty I guess :)...
My roommate just told me that he modified my calculator according to the subject of my examination! And it was :
chemistry.
Now, it might be easy. Chop-chop!