Q6 of 176 Page 9

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.
2, 4, 8, 16, ...

We have,

a₂ – a₁ = 4 – 2 = 2

a₃ – a₂ = 8 – 4 = 4

a₄ – a₃ = 16 – 8 = 8

i.e. a_k+1 – a_k is not same every time.

So, the given list of numbers do not form an AP.

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,

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.

- 2, 2, - 2, 2, - 2, ...

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.

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.2, 4, 8, 16, ...