Question

9. If sum of the n terms of p Arithmetical progressions are S1, S2,S3, ..., Sp and first terms are 1, 2, 3, ..., common differences are 1, 3, 5, ..., then prove that S¹+ S² + S³..+ Sp=½ np (np + 1) ​

Answer 1

Answer:

816111111¹11119181818191

Answer 2

Step-by-step explanation:

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