Which of the following form of an AP? Justify your answer.
–1, –1, –1, –1, ….

Question

Which of the following form of an AP? Justify your answer. –1, –1, –1, –1, ….

Philoid · Accepted Answer

We have a₁ = - 1 , a₂ = - 1, a₃ = - 1 and a₄ = - 1

a₂ - a₁ = 0

a₃ - a₂ = 0

a₄ - a₃ = 0

Clearly, the difference of successive terms is same, therefore given list of numbers from an AP.

Which of the following form of an AP? Justify your answer.–1, –1, –1, –1, ….