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?