Question

Common difference, d = ? for the given A.P., 7, 14, 21, 28 ........

Activity :- Here t₁ = 7, t₂ = 14, t₃ = 21, t₄ = `square`

t₂ − t₁ = `square`

t₃ – t₂ = 7

t₄ – t₃ = `square`

Therefore, common difference d = `square`

Answer 1

Here t₁ = 7, t₂ = 14, t₃ = 21, t₄ = 28

t₂ − t₁ = 14 – 7 = 7

t₃ – t₂ = 7

t₄ – t₃ = 28 – 21 = 7

Therefore, common difference d = 7