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CBSE Class 10 Answered

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 | 20 Mar, 2021, 10:11: AM
answered-by-expert 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 | 21 Mar, 2021, 11:32: PM

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