For the following APs, write the first term and the common difference:

**(i)** 3, 1, -1, -3, ……

**(ii)** -5, -1, 3, 7, ……

**(iii)** , , , , ………

**(iv)** 0.6, 1.7, 2.8, 3.9, …….

**(i)** 3, 1, -1, -3, ……

**(ii)** -5, -1, 3, 7, ……

**(iii)** , , , , ………

**(iv)** 0.6, 1.7, 2.8, 3.9, …….