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Home » The sum of three consecutive terms of an AP is 21 and the sum of the squares of these terms is 165. Find these terms
The sum of three consecutive terms of an AP is 21 and the sum of the squares of these terms is 165. Find these terms
Arithmetic Progression | CBSE | Class 10 | Maths | RS Aggarwal
The sum of three consecutive terms of an AP is 21 and the sum of the squares of these terms is 165. Find these terms

Solution:

Let three consecutive in AP be a – d, a, a + d
a – d + a + a + d = 21
⇒ 3a = 21

i

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