Question

Decide whether the given sequence 2, 4, 6, 8,… is an A.P.

Answer 1

Here, t₁ = 2, t₂ = 4, t₃ = 6

∴ t₂ − t₁ = 4 − 2 = 2

t₃ − t₂ = 6 − 4 = 2

∴ t₂ − t₁ = t₃ − t₂ = ... = 2 = constant

The difference between two consecutive terms is constant.

∴ The given sequence is an A.P.