Question

Write the first five terms of the sequences whose n^th term is:

`a_n = n(n+2)`

Answer 1

a_n = n(n + 2)

By keeping the value of n as 1, 2, 3, 4, 5

a₁ = 1 × 3 = 3,

a₂ = 2 × 4 = 8,

a₃ = 3 × 5 = 15,

a₄ = 4 × 6 = 24,

a₅ = 5 × 7 = 35

Hence, the five terms of the given sequence are 3, 8, 15, 24, 35.