If the oth term of an A.P. be zero, then the ratio of its 29th and 19th term is
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which term?
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Given 9th term = 0
a + 8d = 0
a = -8d
29th term = a + 28d = -8d + 28d = 20 d
19th term = a + 18 d = -8d + 18 d = 10d
Ratio of 29th and 19th term = 20d/10d
= 2/1
the answer is 2:1.
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