The 8th term of APThe 8th term of AP is 0. Prove that its 38 term is triple of its 18th term

 

Asked by Shirlythomas1332 | 20th Mar, 2021, 10:11: AM

Expert Answer:

8th term is 0.
So, a8 = a + 7d = 0   i.e. a = -7d
38th term is a38 = a + 37d = -7d + 37d = 30d
18th term is a18 = a + 17d = -7d + 17d = 10d = 3 x a38
Hence, proved.

Answered by Renu Varma | 21st Mar, 2021, 11:32: PM