Question
If the 7th term of a H.P is 110 and the 12th term is 125, then the 20th term is
Answer: Option D
:
D
Considering corresponding A.P.
a + 6d = 10 and a + 11d = 25 ⇒d= 3, a= -8
⇒T20 = a + 19d = -8 + 57 = 49
Hence 20th term of the corresponding H.P. is 149
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:
D
Considering corresponding A.P.
a + 6d = 10 and a + 11d = 25 ⇒d= 3, a= -8
⇒T20 = a + 19d = -8 + 57 = 49
Hence 20th term of the corresponding H.P. is 149
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