Which of the following are APs? If they form an AP, find the common difference d and write three more terms.
a, 2a, 3a, 4a..

Question

Which of the following are APs? If they form an AP, find the common difference d and write three more terms.a, a2, a3, a4

Philoid · Accepted Answer

For a series to be in AP, the common difference (d) should be

Equal.

D₁ = second term – first term = a² - a = a² - a

D₂ = Third term - Second term = a³ - a² = a³ - a²

Since common difference is not equal the above series is not in AP

Which of the following are APs? If they form an AP, find the common difference d and write three more terms.
a, a², a³, a⁴