Question

Sn = 6n - 8. Find the first four terms in the sequence

Answer 1

∵ Sn = 6n - 8

Put, n = 1

S1 = 6 × 1 - 8 = -2

Put, n = 2

S2 = 6 × 2 - 8 = 4

Put, n = 3

S3 = 6 × 3 - 8 = 10

Put, n = 4

S4 = 6 × 4 - 8 = 16

The First four terms in the sequence is -2, 4, 10, 16.