12. Two marks exercise problems V

1. Thenmalar appeared for competitive exam which has negative scoring of $1$ mark for each incorrect answer. In paper I she answered $25$ questions incorrectly and in paper II, $13$ questions incorrectly. Find the total reduction of marks.

 

Total reduction of marks $=$ 

 

 

2. In a quiz competition, Team A scored $+30$, $-20$, $0$ and team B scored $-20$, $0$, $+30$ in three successive rounds. Which team will win? Can we say that we can add integers in any order?