in your activity notebook or answer sheet write yes if the sequence is an arithmetic sequence then find its common difference .write no if it is not an arithmetic sequence.

Answer:
1. Yes
Difference=4
2. No
3. Yes
Difference= -½
4. Yes
Difference= ÷2
5. Yes
Difference= 2
6. Yes
Difference= ×2
7. Yes
Difference= 4
8. No
9. No
10. Yes
Difference= 9