For the following A.P.'s write the first term and the common difference:
`0.6 , 1.7, 2.8 3.9…`

Answer

To solve the problem, we need to identify the first term and the common difference of the given arithmetic progression (A.P.): `0.6, 1.7, 2.8, 3.9...`

### Step-by-Step Solution:

1. **Identify the First Term (A)**:
- The first term of the A.P. is the first number in the sequence.
- Here, the first term \( A = 0.6 \).

2. **Calculate the Common Difference (D)**:
- The common difference in an A.P. is found by subtracting the first term from the second term (or any two consecutive terms).
- We can calculate it as follows:
\[ D = A_2 - A_1 = 1.7 - 0.6 \]
- Performing the subtraction:
\[ D = 1.1 \]

3. **Conclusion**:
- The first term \( A \) is \( 0.6 \).
- The common difference \( D \) is \( 1.1 \).

### Final Answer:
- First Term (A): \( 0.6 \)
- Common Difference (D): \( 1.1 \)