Which of the following are APs? If they form an AP, find the common difference d and write three more terms.
0.2, 0.22, 0.222, 0.2222, . . . .

Question

Which of the following are APs? If they form an AP, find the common difference d and write three more terms.0.2, 0.22, 0.222, 0.2222, . . . .

Philoid · Accepted Answer

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

Equal.

D₁ = second term – first term = 0.22 -0.2 = 0.02

D₂ = Third term - Second term = 0.222 – 0.22 = 0.002

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