Question

Find first four terms of an A.P., whose first term is 3 and common difference is 4.

Answer 1

First term (a) = 3, Common difference (d) = 4   ...[Given]

t₁ = a = 3

t₂ = t₁ + d

= 3 + 4

= 7

t₃ = t₂ + d

= 7 + 4

= 11

t₄ = t₃ + d

= 11 + 4

= 15

∴ The first four terms of A.P. are 3, 7, 11, 15.