2,.20,3,.30,4,.40 What is the average?

1. 2,.20,3,.30,4,.40 What is the average?
4.90
4.95
4.85
4.75

Ans: 4.95

2. Which is correct?
152-59+12=95
12+157-59=110
95+110-49=146
87-14+8=91

Ans: 12+157-59=110

3. 248+513+171-319-111=?
499
502
512
522

Ans: 502

4. Which is correct? 741-159+1357=?
1939
2909
1819
1929

Ans: 1939


5. what is the correct(nearest)ans- 12345+6789-8765=?
8389
10289
10300
10400

Ans: 10400

6. Which is correct?
999/13*25=1920
888/13*25=1700.21
777/13*26=1554
666/13*26=1331

Ans: 777/13*26=1554