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(i) 10 times the 10th term and 15 times ...

(i) 10 times the 10th term and 15 times the 15th term of an A.P. are equal. Find the 25th term of this A.P .
(ii) 17 times the 17th term of an A.P. is equal to 18 times the 18th term. Find the 35th term of this progression.

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