If 9th term of an A.P. is zero, prove that its 29th term is double the 19th term.
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Answer:
Substituting n = 9 in this formula:
20d = 2(10d). 20d = 20d. Therefore, it is proved that the 29th term is twice the 19th term when the 9th term is 0.
Step-by-step explanation:
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