Question

Find the 71st term of the following arithmetic sequence.

5, 13, 21, 29, ... ​

Answer 1

565

Explanation:

The n th term of an arithmetic sequence is

`a_(n)` = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 5 and d = 13 - 5 = 8, thus

`a_(71)` = 5 + (70 × 8) = 5 + 560 = 565

Answer 2

7,120

Explanation: