Question

3rd term = 14 10th term 49 20 th term =?

Answer 1

Step-by-step explanation:

$= > a + 2d = 14 \\ = > a + 9d = 49 \\ = > a - a + 9d - 2d = 49 - 14 \\ = > 7d = 35 \\ = > d = 5 \\ = > a = 14 - 10 \\ = > a = 4 \\ = > a + 19d = 4 + 19(5) = 4 + 95 = 99$

20th term is 99.