For the following A.P's write the first term and common difference:

147, 148, 149, 150, ...

In general, for an AP a₁, a₂, . . . .,a_n, we have

d = a_k+1 - a_k

where a_k+1 and a_k are the (k+1)^th and k^th terms respectively.

For the list of numbers: 147, 148, 149, 150, ...

a₂ – a₁ = 148 – 147 = 1

a₃ – a₂ = 149 – 148 = 1

a₄ – a₃ = 150 – 149 = 1

Here, the difference of any two consecutive terms in each case is -1. So, the given list is an AP whose first term a is 147 and common difference d is 1.