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# Solution - The sum of n terms of three arithmetical progression are S1 , S2 and S3 . The first term of each is unity and the common differences are 1, 2 and 3 respectively. Prove that S1 + S3 = 2S2 - CBSE Class 10 - Mathematics

ConceptSum of First n Terms of an AP

#### Question

The sum of n terms of three arithmetical progression are S1 , S2 and S3 . The first term of each is unity and the common differences are 1, 2 and 3 respectively. Prove that S1 + S3 = 2S2

#### Solution

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#### APPEARS IN

NCERT Mathematics Textbook for Class 10
Chapter 5: Arithmetic Progressions
Q: 0 | Page no. 0

#### Reference Material

Solution for question: The sum of n terms of three arithmetical progression are S1 , S2 and S3 . The first term of each is unity and the common differences are 1, 2 and 3 respectively. Prove that S1 + S3 = 2S2 concept: Sum of First n Terms of an AP. For the course CBSE
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