If the third term of an AP is 18 and seventh term is 30. Find the 17th

1.	If the third term of an AP is 18 and seventh term is 30. Find the 17th term.ĺ°ĺ:
Answer» Let a be the first term and d be the common difference Then According to the question !!!! a + 2d = 18 (1) a + 6d = 30 (2)from 1 and 2 4d = 12d = 3 Substitute it in 1 a + 6 = 18a = 12 so 17 term a + 16d = 12 + 16×3 = 12 + 48 = 60

If the third term of an AP is 18 and seventh term is 30. Find the 17th term.ĺ°ĺ:

Answer»

Let a be the first term and d be the common difference

Then According to the question !!!!

a + 2d = 18 (1) a + 6d = 30 (2)from 1 and 2

4d = 12d = 3 Substitute it in 1

a + 6 = 18a = 12 so 17 term

a + 16d = 12 + 16×3 = 12 + 48 = 60