Question

What would be the 70 term and how do you know thanks

Answer 1

143

Explanation:

The terms 5, 7, 9, 11, 13 form an arithmetic progression with n th term

`a_(n)` =
`a_(1)` + (n - 1)d

where d is the common difference and
`a_(1)` the first term

d = 13 - 11 = 11 - 9 = 9 - 7 = 7 - 5 = 2 and
`a_(1)` = 5, hence

`a_(70)` = 5 + (69 × 2 ) = 5 + 138 = 143