Q5 of 176 Page 9

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

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:

Here, the difference of any two consecutive terms in each case is . So, the given list is an AP whose first term a is 2 and common difference d is .

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

- 5, - 1, 3, 7, ...

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

3, 1, - 1, - 3, ...

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

Which of the following list of numbers form A.R's? If they form an A.P., find the common difference d and also write its next three terms.

1, - 1, - 3, - 5,