Question

Which of the following form an AP? Justify your answer.

`1/2, 1/3, 1/4, ...`

Answer 1

We have a₁ = `1/2` , a₂ = `1/3` and a₃ = `1/4`

a₂ – a₁ = `-1/6`

a₃ – a₂ = `-1/12`

Clearly, the difference of successive terms is not same

Therefore given list of numbers does not form an AP.