10th Science Term-1 real paper 17 December 2021 | PSEB Term-1 exam Science| GAURAV CROOKS 10th #pseb

10th science ch 12 electricity 2022

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(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.

If the 10th term of an A.Pis 52 and 17th term is 20 more than the 13th term, find the A.P.

If the 10^(th) term of an HP is 21 and 21^(st) term of the same HP is 10, then find the 210^(th) term.

Find the 31st term of an A.P. whose 10th term is 38 and 16th term is 74.

Each term of a sequence is the sum of its preceding two terms from the third term onwards. The second term of the sequence is -1 and the 10th term is 29. The first term is "_________"

If sum of the 3rd and the 8th terms of an AP is 7 and the sum of the 7th and 14th terms is -3 , then find the 10th term.

In a certain A.P., the 24th term is twice the 10th term . Prove that the 72nd term is twice the 34th term .

In certain A.P. the 24th term is twice the 10th term. Prove that the 72nd term is twice the 34th term.